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ABOUT US

THE TUNGSTEN DIFFERENCE

Tungsten Prep is a family-owned, local company dedicated to helping students succeed and find joy in learning

Tungsten Prep was founded in 2017 as a one-woman operation.  We quickly discovered an unmet need. Families indicated that they wanted something that was missing — a tutor that was more than a short-term homework helper or test prep coach.  They wanted to work with one partner — someone who knows their community understands their family, embraces their student’s unique learning style and is skilled enough to tutor more than one single subject.

Tungsten Prep reflects our leadership’s values for success as parents and managers — rational, realistic, results-oriented, compassionate and, especially, family-centric.

We believe students thrive when they find that just-right tutor who understands their learning style, inspires them to work harder.  And, hopefully, makes them laugh.

Our team is the key to that mission.  We are diverse in every sense of that word – from our backgrounds to our expertise to our teaching styles.  And we are proud to offer role models whose own life experiences and professional accomplishments encourage students to rethink their preconceived limits and dream big.

Best ACT SAT tutors DC tungsten Prep

Kristen Mastropole

CEO and Lead Tutor

From the Arctic to the Galapagos, Kristen has crossed the oceans as a climate scientist with a passion for biodiversity. Before becoming the CEO of Tungsten Prep, she had more than a decade of experience as a tutor, most recently as the director of STEM education at a tutoring center in Hong Kong. In her first year at Tungsten Prep, she helped design the curricula for both standardized tests and general study skills.

And while her research vessels may have taken her to the far corners of the Earth, Kristen always returns to her native DMV, and her students find relevance in her own hometown experiences as a graduate of Georgetown University and the Holton-Arms School.

Sheena Martin

chief of operations and outreach

Sheena is the motor that keeps the Tungsten Prep engine running! A veteran of multiple start-ups, you can rely on this dedicated working mom’s exceptional organizational skills and and understanding of student needs to help families find that just-right tutor and navigate the alphabet soup of SAT, ACT, APs or SSAT. Have a billing question? Sheena is here to help.

A native of Virginia, Sheena has lived around the country with her active duty military husband and children. Her philosophy is that no one-size-fits-all approach works for families or for students, and her mission is to offer parents practical and candid advice that keeps our families build confidence inside and outside the classroom. She also believes that supporting teenagers requires a good sense of humor and aims to keep parents smiling!

MEET THE TEAM

Biology | Chemistry | Math

Andrew Hoy

Andrew is a second-year Ph.D. student at Georgetown University performing research in a biochemistry lab within the Chemistry Department. A self-claimed extrovert, Andrew enjoys finding adventure and sharing his experiences. He brings this love of life to each session, quickly building friendships with each student. From his time as a summer volunteer, a study mentor, and a basketball coach, Andrew carries a cool sense of calm that helps every student feel comfortable and confident as they push past the discomfort of not understanding and into content confidence. He is an excellent tutor for students exploring and building their STEM knowledge because he brings real-world experience to each session.

Test Prep | Math | English | Science | Drama

Anna Walden

Anna’s love of learning and her passion for the stage brings excitement to each of her lessons. As a Hawaii native who has lived, traveled, and performed around the world, she is well versed in connecting with new students from all walks of life. Anna has found herself in roles such as researcher, instructor, writing assistant, coach, and tutor as she traversed the globe. She received her Master of Fine Arts at George Washing University, her Master’s from the Royal Academy of Dramatic Arts in London, and her Bachelor in Creative Writing at Stanford University. With nearly a decade of tutoring experience, Anna makes humanities, STEM, and test prep a breeze. In her free time, she can be found solving a puzzle, hiking, knitting, and spending time with her family.

AP English | History | Spanish

Caitlin Jordan

Caitlin is a lover of all things literary. She completed her Master’s in English Literature at Georgetown University. Caitlin has taught Middle School and High School English in Florida and Idaho, where she served as a full-time residential advisor and summer camp counselor. She is currently working as a history teacher for both 7th and 8th-grade students at a private school, but her teaching experience includes high school history as well as English. Her experience living and working with adolescents gives her empathy for her student’s goals and interests and ensures she keeps them laughing. From the passionate reader to the reluctant writer, Caitlin loves meeting her students where they are and helping them find their inner bookworm. Whether they are vexed by grammar, bored by literature, or possibly in throws of understanding the Roman empire, Caitlin loves building her students’ understanding from the ground up.

AP Calculus | AP Statistics | Chemistry | Geometry

Carol Kong

Carol started tutoring at only 15 years old as a peer tutor at her competitive NYC high school and has not stopped since. With over 10 years of experience, Carol is the go-to math tutor for any student who needs a confidence boost delivered with humor and patience. Carol completed her Bachelor’s in Biochemistry from SUNY Plattsburgh and her Master’s degree in Chemistry from American University and she currently works at the National Institutes of Health, where she supports research in neurological diseases and other chronic health conditions. Carol can adapt her teaching style to fit any student’s unique needs and believes math can be enjoyable.

When she is not tutoring, Carol spends her time café journaling with her friends, collecting fountain pens, and trying new restaurants in the DMV area.

Math | Test Prep | Business | Into Accounting | Excel

Catherine Tan

Catherine is currently attending Georgetown University, McDonough School of Business where she is completing her degree in Finance, Operations and Analytics. As a self described extrovert, she enjoys the camaraderie that comes with working with peers and building positive connections with her students. As a tutor who covers a large variety of subjects spanning math, English, and test prep, she brings years of experience and tools with her to the Tungsten Prep team. She is the perfect tutor for even the reluctant student who needs someone who can pull the them out of their shell and help them lay the foundation for lifelong learning.   

When she is not tutoring, Catherine can be found playing tennis or badminton, going for walks, playing board games, or trying new and delicious food around D.C.

AP Physics | Math | Test Prep

Charlezetta Stokes

Charley, a veteran of Detroit’s most prestigious STEM high school, she can empathize with her students’ journey through the sometimes-terrifying realm of AP Physics and Calculus, and her passion for science helps them come out the other side with a newfound sense of wonder for the natural world. She was a natural addition to our test prep team, where she has helped students reach their goals time and time again.

Charley completed her Ph.D. in Physics at Howard, where her research focused on nanomaterials. Charley’s work has taken her to the intersection between Physics and daily life, from the Ford Motor Company’s Scientific Research Laboratories to the Stanford Linear Accelerator Center to NIST’s Center for Neutron Center. Her unmatched passion helps her students recognize that science is a part of life, and when we put our fears aside, there is nothing we cannot master.

English | Writing

Dawn Henderson

Dawn loves to help students discover the magic in books. From the mechanics of grammar to the weightiest literature topics, this seasoned teacher leads students through all the stages of competent and confident writing. Dawn is completing her PhD in African-American Literature at Howard University, but it was overcoming childhood struggles with reading that set her on a lifelong mission to help others experience that moment of understanding, clarity, and intrigue that comes from learning something new. Dawn’s own interests are wide-ranging, from a passion for travel to a love of gardening, cooking, and writing poetry and she brings her curiosity and positivity to each of her students.

French | English | Social Studies | Writing

Emily Somberg

Emily was raised halfway between Washington and Paris and serves as a linguistic and cultural interpreter for her students. She helps students get to the bottom of French grammar, History, test prep, and general studies. She has a particular knack for students, and her patient and systematic approach helps those newer to homework refine their test-taking, critical thinking, and time-management skills. Emily has a master’s degree in anthropology from George Washington University. She is the perfect tutor for any middle or high school student looking to explore the depths of school and see how it all connects. She currently works in law and loves to hike and cook when she’s not tutoring.

AP Biology | AP Chemistry | AP Environmental Science | Math | English

Erin Conn

Erin’s passion for science has led her to become a dedicated advocate for equity in STEM and higher education. After some timely tweets on women in science went viral, she was able to raise funds to establish the first graduate student group in STEM focused on equity and inclusion at Georgetown, where she earned her Ph.D. in Biochemistry. She now works at the American Association for the Advancement of Science’s SEA Change Initiative, which is dedicated to advancing diversity, equity and inclusion in higher education.

Erin’s love of teaching is driven by the extraordinary mentors she herself has enjoyed, and she hopes to pay that forward by inspiring scientific curiosity and confidence in her students. As a college athlete, she also loves helping students develop a healthy balance that enables them to achieve both academic and extracurricular goals.

Math | Spanish | SAT | ACT

Greta Batista

From a middle schooler who “hated” math to president of the George Washington University Association of Women in Math, Greta recognizes that a confidence boost and good study habits can help any student find their inner math enthusiast. This Northern Virginia native has been tutoring students in math, English and Spanish since high school and understands the unique pressures that local students face. A born extrovert, Greta enjoys learning about her students’ interests to motivate them. She is a native Spanish speaker and has degrees in both math and political science from GWU. She enjoys working with students who want help in a broad range of subjects.

Chemistry | Biology | Statistics | Physics | Spanish | ACT Prep

Hunter Hendrix

Hunter is a graduate of Johns Hopkins University, where he studied Biophysics. He is now attending Standford Law School in CA. His STEM background, Spanish proficiency, and law aspirations enable him to tackle a wide variety of subjects and provide an interdisciplinary teaching approach to topics such as science, math, Spanish, and ACT Prep. He brings years of tutoring experience to the Tungsten Prep team from his time supporting college and high school students at Hopkins. Any student looking for a tutor who can help connect the dots between various topics and the world around them would find comfort in working with Hunter! He enjoys whitewater kayaking, true crime, and crocheting when he isn’t working!

Statistics | Biology | Math

Grier Glynn

Grier is a highly motivated and detail-oriented tutor currently majoring in Statistics at George Washington University. With minors in Biology and Data Science, she possesses a broad spectrum of knowledge in STEM subjects, making her an ideal tutor for students in need of comprehensive support. Grier’s analytical skills enable her to assist students in making informed academic decisions and facilitate meaningful content review. Her participation in the Spatial Stats REU at Georgetown University allows her to bridge the gap between classroom concepts and their real-world applications. Beyond tutoring, Grier holds leadership positions that reflect her commitment to collaborative thinking, which she brings to her interactions with students. She takes great pleasure in guiding students through the captivating realms of math, science, computer science, and statistics. When she’s not working with students, you can find her scaling rock walls with her friends.

Science | Test Prep | General Studies | Biology | English | Social Studies

Jenna Wiegand

Jenna Wiegand earned her Ph.D. from the University of California, Riverside, in Environmental Sciences before returning to the east coast to work at the Environmental Protection Agency. While at UC Riverside, her research highlighted the impact of specific chemicals on zebrafish development, and thus, the impact on ecosystems and humans. When not presenting at conferences and publishing papers, she mentored undergraduate students through the rigors of higher education and the Ph.D. process.

As someone diagnosed with ADHD in her Junior year of college and who struggled with procrastination, test anxiety, and organization for years, Jenna understands what it is like to be misunderstood by teachers. She has made it a top goal to help students reach their full potential by understanding how they learn and what they wish to accomplish. Her intentional approach and understanding disposition help her to enthusiastically support students through test prep, science, and general studies. She can help even the most defeated student feel a sense of confidence both inside and outside the classroom.

Physics | Chemistry | Calculus AB | Spanish | Test Prep

JD Carrizo

Armed with a Bachelor’s degree in materials science and engineering from Johns Hopkins University, JD excels at explaining difficult STEM subjects like physics, chemistry, and calculus to students in a way that they find approachable and easy to understand. As a native Spanish speaker, JD has also worked with students to make language learning a breeze.

When it comes to tutoring, JD pulls from his time in Stockholm, Sweden, where he was inspired by the bright minds of those around him. This experience deepened his passion for STEM and reinforced his commitment to sharing knowledge with others. He believes in the power of connection and is grounded in principles of honesty, patience, and effective communication. JD endeavors to establish a nurturing environment where errors are not only accepted but also embraced as an important part of the learning process.

When JD isn’t tutoring, you can find him learning to play the electric guitar, practing yoga, and reading Spanish classic literature.

Science | Math | English | SAT | ACT

Joan Reger

We defy you to find a subject Joan can’t teach. Joan is pursuing a PhD in Biology at Georgetown. But she first fell in love with the sciences as a high school student, when great teachers helped her discover the excitement of researching our biological world. She loves tutoring because it helps her pay that forward, and she mentors students with great patience and warmth, gently encouraging them to find their own full potential. A true humanist, Joan is as much at home in the realm of writing and literature as she is in the sciences, and she logged hundreds of hours tutoring high school students in both STEM subjects and English while attending Emory University. She is the ideal tutor for students who want a versatile and confidence-boosting guide and welcome support in multiple subjects.

AP US History | AP Government | AP World Geography | AP World History | Reading | Writing | ESL | General Studies

Juliana Morrison

Juliana holds a Master of Arts in Education, specializing in Curriculum and Instruction of Secondary Social Studies from the College of William and Mary. She is licensed to teach English as a second language and is College Board Certified in AP US Government and Politics. Throughout her career, she has developed and implemented engaging curricula that emphasize critical thinking, research skills, effective communication, and collaboration. Juliana has worked with middle and high school students in AP Boot Camp to facilitate their transition from honors courses to AP classes, specifically focusing on AP Human Geography, World History, US Government, and US History. Currently, she teaches social studies at a high school in northern Virginia. Prior to this position, she served as a Social Studies Team Lead, providing support to K-8 students in Alexandria.

With her extensive experience and education, Juliana is equipped to deliver exceptional instruction. She incorporates SEAL (Social, Emotional, and Academic Learning) lessons into her teaching, emphasizing coping mechanisms, time management, self-care, and clear communication. Her skill set enables her to work effectively with students possessing a wide range of personalities, academic abilities, and socioemotional needs. Juliana is the ideal tutor for any student seeking patient, intentional, and kind support.

Math | History | English | Spanish

Kaitlin Rogers

Kaitlin loves to help students discover the talents they often can’t fully see. She has designed study skills and college readiness programs for first-generation college students in her hometown of Madison, Wisconsin, and taught a course at Furman University that helped students with different social identities engage in conversations to develop empathy and dialogue skills. Her experiences led her to Howard University, where she is pursuing a master’s degree in History. In her spare time, Kaitlin loves cooking, riding her bike and spending time with her friends and partner.

Algebra I & II | Precalculus | Probability & Statistics

Kayla Kelly

Kayla received her B.S. in Economics with a concentration in Applied Mathematics with Honors from the Georgia Institute of Technology (Georgia Tech) and her Master of Science in Education-Educational Studies with a concentration in Secondary Mathematics and Special Education from The Johns Hopkins University. While at Georgia Tech, Kayla received multiple awards for her scholastic achievements and was inducted into Omicron Delta Epsilon National Economics Honor Society and Pi Mu Epsilon National Mathematics Honor Society. Kayla is a three-time recipient of Georgia Tech’s Office of Minority Education (OMED) Tower Award for academic achievement. As an undergraduate, Kayla was also involved and led multiple organizations on campus, including the Jumpstart Americorps program and Georgia Tech’s Women Awareness Month (WAM) and Martin Luther King Jr. Celebration Day committees.

In addition to her academic pursuits, Kayla also gained a variety of professional experience as an intern with the District of Columbia Department of Health (DOH), the District of Columbia Office of the Deputy Mayor for Planning and Economic Development (DMPED), the Georgia Department of Economic Development (GDecD), Accenture Federal Services (AFS), and Northwestern Mutual. Kayla is also involved within her community, as she serves on the Education Achievement Day committee at her church, the Georgia Tech Alumni Association’s (GTAA) Graduates of the Last Decade (GOLD) Advisory Board, The Holton-Arms School Alumnae Board, a Regional Network Leader for the Georgia Tech DC Alumni Network, D.C. Public Schools Technology Advisory Committee, a mentor for Georgia Tech’s Mentor Jackets program, and a volunteer at Martha’s Table. Kayla previously served on the Caribbean Political Action Committee (C-PAC)’s Young Adult Initiative committee and was the Mentorship and Professional Development Lead of the DC Chapter of Women Who Code. Kayla is currently an educator for D.C. Public Schools and the Vice President of The Kelly Group L.L.C., a business and educational consulting practice based in Washington, D.C. 

SAT | ACT | Math | Science | Curriculum Development

Kristen Mastropole

From the Arctic to the Galapagos, Kristen has crossed the oceans as a climate scientist with a passion for biodiversity. She has more than a decade of experience as a tutor, most recently as the director of STEM education at a tutoring center in Hong Kong. Kristen’s breadth of experience with high school students benefits all our students, and she helps design curricula for both standardized tests and general study skills.

And while her research vessels may have taken her to the far corners of the Earth, Kristen always returns to her native DMV, and her students find relevance in her own hometown experiences as a graduate of Georgetown and the Holton-Arms School.

Math | Biology | Physics | Test Prep

Lianna Chung

Lianna is a Georgetown student completing her degree in Computer Science. A transplant from her home state of New Jersey, Lianna brings to the Tungsten Prep team years of tutoring experience with students ranging all the way from elementary school to high school. Along with working with students one-on-one to ensure their success, she also has experience leading online group classes. While she predominately focuses on STEM topics such as middle school and high school math and science, she also supports students through computer science courses and test prep. She is the perfect tutor for any student who is looking for a compassionate, understanding tutor who gently but firmly guides them through the rigors of STEM courses while catering to their needs and interests.

AP History | AP English | AP Psychology | Classical Studies | AP Biology | Reading and Writing

Lindsay Jenkins

Lindsay graduated from Georgetown University, where she majored in Classics and minored in Cognitive Science and Psychology.  As a tutor, she values active listening and deeper connections over superficial interactions and integrates patience, compassion, and empathy into her teaching approach. She specializes in a wide range of subjects for middle and high school students, including reading, writing, English, social studies, history, psychology, government, classical studies, and biology. Her love of tutoring and mentorship has grown since her early formative years, and she has served on the head committee of Georgetown College of Arts and Science’s peer advising program.  

She is an excellent tutor for students who can benefit from gentle, affirmative, and constructive guidance. With her adaptability, positive feedback, and commitment to creating supportive learning environments, she is uniquely suited to help students succeed by tailoring her approach to meet their individual needs. In her spare time, Lindsay enjoys reading, writing poetry, spending time in nature, painting, and playing pick-up soccer.

AP English | AP World History | AP U.S. History | Latin | Greek

Matthew Fredericks

Matthew never achieved his childhood dream of becoming the next Michael Jordan, but he has bicycled across the United States, runs marathons and loves to share his wide-ranging book tastes with his students. An area native, he returned to Washington, DC after recovering from a travel bug that took him to 59 countries. He has taught Math and History for Teach for America in Brooklyn and currently teaches Latin at Bishop McNamara High School in Maryland. Never one to sit still, he is also pursuing graduate studies in Classics at Georgetown University. His motivation to push his body and mind is mirrored in his knack for pushing students to reach outside their comfort zone while ensuring that they come away with greater confidence and an improved understanding of the subject at hand.

SAT | ACT | Math | English | Spanish

Mae Butler

A self-described “ambivert,” Mae shifts comfortably between high-energy social interactions and quiet time spent gardening, cooking and embroidering. She brings that same approach to her students and excels at connecting with a wide range of students, from introverts to extroverts and confident test-takers to nervous first-timers. She graduated from Columbia University, where she was a Presidential Global Fellow. Mae began her test prep career in at an NY-based NGO that helps local students prepare for the SAT and ACT. Her students can expect patient and supportive instruction that integrates mentorship and rigorous study. Her goal is for all her students to apply the skills they develop together in future coursework and to have fun while studying!

English | Reading | Writing | Government | TOEFL | SAT and ACT Verbal

Nancy Wolf

Nancy stands steadfast that learning can, and should, have both a sense of fun and achievement. This long-time native of Maryland carried this sentiment with her through law school, her time at a communications law firm in DC, and now as a tutor working with students of all ages to build confidence and a sense of comfort in learning. Her mental health advocacy background helps create a space for her students to feel heard, appreciated, and understood while navigating coursework and school hardships. She is an excellent tutor for any student looking for support in English, Government, Reading, Writing, English as a Second Language, or college essay support.

Math | Science | IB | Test Prep

Nate Malone

Nate specializes in science, math, and test preparation. With a Bachelor of Science degree in Materials Science and Engineering and Chemistry from Johns Hopkins University, Nate is deeply committed to fostering a love for learning among students from diverse backgrounds. Having lived and studied abroad in South India and Argentina, Nate brings a wealth of cultural insights to his teaching approach, valuing the importance of connecting with individuals from various walks of life.

Nate takes great pride in witnessing his students overcome obstacles and develop essential problem-solving skills, whether it pertains to mastering complex equations or excelling in standardized tests. Furthermore, Nate is dedicated to creating a supportive and conducive learning environment where students feel empowered to address their weaknesses and cultivate academic confidence. In his leisure time, Nate enjoys running outdoors and is currently training for an upcoming 50-mile race.

Math | Physics

Neeraj Tatikola

Neeraj’s love of teaching goes back to middle school when a teacher started a summer book club. The experience of having his instructor push him to question his preconceived limits exposed him to the life-changing superpowers of a great teacher. Neeraj taught math, statistics, and physics at Penn State, while serving as a tutor to Division I athletes, where he learned to motivate busy students and help them juggle competing priorities. After passing all his actuarial exams and working for 4 years as a pension actuary, Neeraj is now pursuing graduate studies in Mathematics, currently serving as a teaching assistant at Lehigh University. He is a firm believer in prioritizing health and well-being through both physical exercise, such as yoga and weight training, and mental exercise, via meditation & mindfulness practices.

Science | Math | AP Computer Science

Oliver Broadrick

Oliver loves bringing his infectious energy and love of learning to students. As a Division 1 rower, he juggles a demanding academic and extracurricular schedule and loves to help students tackle lofty challenges and meet their own goals. Oliver completed his Master’s degree in Computer Science and Mathematics at GW while working on research in post-election risk-limiting audits. He is now a Ph.D. student at UCLA, further exploring Computer Science. Oliver uses his experience in math and software to show students the exciting real-world payoff of excelling in STEM subjects. He is an outdoors enthusiast who grew up on a Maine farm and believes in finding balance through nature. He is the right tutor for students who need help in multiple STEM subjects or want a high-energy cheerleader in their corner.

Chemistry | Biology | Physics, | Math | Social Studies | English | Test Prep

Philip Sumberaz

Philip is an alumnus of American University, where he immersed himself in his passion for Science within their Biology department. He has integrated research and teaching into his academic journey both during and after his time at American. Since earning his degree, he has contributed to mitochondrial DNA research through UC Riverside’s chemistry department and then transitioned into teaching students within the Riverside School District. During his teaching tenure, he prioritized the creation of inviting and nurturing learning environments and dedicated himself to fostering both academic excellence and personal growth in his students.

Philip would serve as an ideal tutor for any student seeking a consistent and calming presence to guide them through the challenges of advanced sciences, math, social studies, and English. When he’s not busy supporting students, you can find Philip fully immersed in the gaming world!

Calculus | Computer Science | Physics | Economics | Chemistry | Chinese

Ralph Liu

Ralph arrived at Georgetown University with “zero experience” in computer science. Three years later, he became a teaching assistant in the same classes he once struggled in. During his time at Georgetown, he contributed to distributed Graph research and published experiments working in HPC systems at a US National Lab. He now works in Graph analytics as a Systems Engineer at Nvidia.

A nomadic childhood moving between Seoul, Toronto, Boston, Beijing, and Washington, DC, gave him an appreciation for cultural diversity and taught him a cheerful adaptability that helps him connect with a wide range of students in subjects such as STEM, Chinese, and economics. In his spare time, Ralph loves playing badminton, tennis, and guitar.

Bio | Chemistry | Physics | Calculus | Computer Science | Writing | English

Ramsin Yadgar

Ramsin’s lifelong passion for the sciences led him to an early career as an engineer, but his interest in helping people brought him to medicine. He draws on his varied experiences – from a Fortune 500 company to Silicon Valley start-ups to clinical work with patients – to empower his students to embrace their entrepreneurial spirit, be resilient in the face of obstacles, and approach teamwork with compassion and humility. Since completing his medical degree at the George Washington University School of Medicine, he continued his medical training as a current resident in the GW Department of Psychiatry. Concurrently, he diligently pursues his passion for academia by tutoring students across a diverse range of sciences and humanities subjects.

Ramsin began his tutoring career in high school and through college, and he hasn’t stopped since. A proud Californian, he believes the diversity of his home state and his experience working with a wide range of students enables him to adjust his instructional style to suit the unique needs of each learner. Ramsin is the right tutor for students who need support across a wide range of subject, for those tackling multiple AP classes, and for students who need a motivating role model to help them improve their organizational skills and spark their interest in school.

Writing | English Literature | Math | Science | History | Economics

Sofia Romano

Sofia grew up both locally and internationally, settling in places such as the United Arab Emirates, Mexico, Singapore, and various cities throughout the United States. After receiving her bachelor’s degree from Johns Hopkins University in both molecular and cellular biology and sociology, she is beginning her journey into medical school. Her diverse educational and life experiences have afforded her a depth of knowledge that allows her to work with students on a myriad of topics ranging from the humanities to advanced STEM fields. Beyond her years of tutoring experience, Sofia has had the opportunity to work with families in pediatric oncology wards, worked with refugees, and helped neurodivergent students in week-long outdoor courses to open up and connect. Having experience working with both younger and older learners, she is well versed in local school curricula, IB programs, and international studies. Sofia is an excellent and engaging tutor for any student who needs support in multiple areas of study.  

When she is not tutoring, Sofia can be found growing vegetables in her garden or exploring nature through kyaking or backpacking. 

Spanish | Computer Science | Social Studies | Math

Victor Ke

Victor is currently attending Johns Hopkins University, where he is a student researcher pursuing his master’s degree in health communication and education. This self-described ambivert hails from Southern California and embodies adaptability and an understanding disposition, which are crucial qualities for any tutor. Victor firmly believes that establishing meaningful connections and effective communication enhance every tutoring session, fostering a positive learning environment for his students. He recognizes the importance of tailoring his teaching methods to the unique needs of each student, adopting a personalized approach that ensures maximum engagement and comprehension. His experience with the International Rescue Committee has provided him with opportunities to connect with and build relationships with newly settled refugees as they navigate their lives.

Victor’s extensive range of subjects, including math, history, English, Spanish, and computer science, makes him an excellent tutor for students seeking in-depth exploration of various topics or general academic support. As a native Spanish speaker, he is particularly adept at assisting students with the intricate concepts encountered in advanced Spanish classes. When Victor is not tutoring, you can find him supporting his favorite team, Arsenal, or engaging in outdoor activities. His kind and personable demeanor make him the perfect tutor even for the most reluctant of students.

Arabic

Zahraa Alnajaar

Zahraa makes learning Arabic a cultural adventure. She believes students learn best when they understand not just the subjects and verbs, but the art, music, geography and history that enriches and informs the language. A veteran teacher with 16 years’ experience, Zahraa is on the cutting edge of using technology and online learning resources to enhance her students’ understanding and enthusiasm for Arabic.

Zahraa is a lecturer in Arabic at American University and teaches classes at both the Middle East Institute and Johns Hopkins’ School of Advanced International Studies. She has a PhD in literature from Aleppo University.

Biology | Chemistry | Math

Andrew Hoy

Andrew is a second-year Ph.D. student at Georgetown University performing research in a biochemistry lab within the Chemistry Department. A self-claimed extrovert, Andrew enjoys finding adventure and sharing his experiences. He brings this love of life to each session, quickly building friendships with each student. From his time as a summer volunteer, a study mentor, and a basketball coach, Andrew carries a cool sense of calm that helps every student feel comfortable and confident as they push past the discomfort of not understanding and into content confidence. He is an excellent tutor for students exploring and building their STEM knowledge because he brings real-world experience to each session.

Test Prep | Math | English | Science | Drama

Anna Walden

Anna’s love of learning and her passion for the stage brings excitement to each of her lessons. As a Hawaii native who has lived, traveled, and performed around the world, she is well versed in connecting with new students from all walks of life. Anna has found herself in roles such as researcher, instructor, writing assistant, coach, and tutor as she traversed the globe. She received her Master of Fine Arts at George Washing University, her Master’s from the Royal Academy of Dramatic Arts in London, and her Bachelor in Creative Writing at Stanford University. With nearly a decade of tutoring experience, Anna makes humanities, STEM, and test prep a breeze. In her free time, she can be found solving a puzzle, hiking, knitting, and spending time with her family.

AP Calculus | AP Statistics | Chemistry | Geometry

Carol Kong

Carol started tutoring at only 15 years old as a peer tutor at her competitive NYC high school and has not stopped since. With over 10 years of experience, Carol is the go-to math tutor for any student who needs a confidence boost delivered with humor and patience. Carol completed her Bachelor’s in Biochemistry from SUNY Plattsburgh and her Master’s degree in Chemistry from American University and she currently works at the National Institutes of Health, where she supports research in neurological diseases and other chronic health conditions. Carol can adapt her teaching style to fit any student’s unique needs and believes math can be enjoyable.

When she is not tutoring, Carol spends her time café journaling with her friends, collecting fountain pens, and trying new restaurants in the DMV area.

AP Physics | Math | Test Prep

Charlezetta Stokes

Charley, a veteran of Detroit’s most prestigious STEM high school, she can empathize with her students’ journey through the sometimes-terrifying realm of AP Physics and Calculus, and her passion for science helps them come out the other side with a newfound sense of wonder for the natural world. She was a natural addition to our test prep team, where she has helped students reach their goals time and time again.

Charley completed her Ph.D. in Physics at Howard, where her research focused on nanomaterials. Charley’s work has taken her to the intersection between Physics and daily life, from the Ford Motor Company’s Scientific Research Laboratories to the Stanford Linear Accelerator Center to NIST’s Center for Neutron Center. Her unmatched passion helps her students recognize that science is a part of life, and when we put our fears aside, there is nothing we cannot master.

AP Biology | AP Chemistry | AP Environmental Science | Math | English

Erin Conn

Erin’s passion for science has led her to become a dedicated advocate for equity in STEM and higher education. After some timely tweets on women in science went viral, she was able to raise funds to establish the first graduate student group in STEM focused on equity and inclusion at Georgetown, where she earned her Ph.D. in Biochemistry. She now works at the American Association for the Advancement of Science’s SEA Change Initiative, which is dedicated to advancing diversity, equity and inclusion in higher education.

Erin’s love of teaching is driven by the extraordinary mentors she herself has enjoyed, and she hopes to pay that forward by inspiring scientific curiosity and confidence in her students. As a college athlete, she also loves helping students develop a healthy balance that enables them to achieve both academic and extracurricular goals.

Statistics | Biology | Math

Grier Glynn

Grier is a highly motivated and detail-oriented tutor currently majoring in Statistics at George Washington University. With minors in Biology and Data Science, she possesses a broad spectrum of knowledge in STEM subjects, making her an ideal tutor for students in need of comprehensive support. Grier’s analytical skills enable her to assist students in making informed academic decisions and facilitate meaningful content review. Her participation in the Spatial Stats REU at Georgetown University allows her to bridge the gap between classroom concepts and their real-world applications. Beyond tutoring, Grier holds leadership positions that reflect her commitment to collaborative thinking, which she brings to her interactions with students. She takes great pleasure in guiding students through the captivating realms of math, science, computer science, and statistics. When she’s not working with students, you can find her scaling rock walls with her friends.

Chemistry | Biology | Statistics | Physics | Spanish | ACT Prep

Hunter Hendrix

Hunter is a graduate of Johns Hopkins University, where he studied Biophysics. He is now attending Standford Law School in CA. His STEM background, Spanish proficiency, and law aspirations enable him to tackle a wide variety of subjects and provide an interdisciplinary teaching approach to topics such as science, math, Spanish, and ACT Prep. He brings years of tutoring experience to the Tungsten Prep team from his time supporting college and high school students at Hopkins. Any student looking for a tutor who can help connect the dots between various topics and the world around them would find comfort in working with Hunter! He enjoys whitewater kayaking, true crime, and crocheting when he isn’t working!

Science | Test Prep | General Studies | Biology | English | Social Studies

Jenna Wiegand

Jenna Wiegand earned her Ph.D. from the University of California, Riverside, in Environmental Sciences before returning to the east coast to work at the Environmental Protection Agency. While at UC Riverside, her research highlighted the impact of specific chemicals on zebrafish development, and thus, the impact on ecosystems and humans. When not presenting at conferences and publishing papers, she mentored undergraduate students through the rigors of higher education and the Ph.D. process.

As someone diagnosed with ADHD in her Junior year of college and who struggled with procrastination, test anxiety, and organization for years, Jenna understands what it is like to be misunderstood by teachers. She has made it a top goal to help students reach their full potential by understanding how they learn and what they wish to accomplish. Her intentional approach and understanding disposition help her to enthusiastically support students through test prep, science, and general studies. She can help even the most defeated student feel a sense of confidence both inside and outside the classroom.

Physics | Chemistry | Calculus AB | Spanish | Test Prep

JD Carrizo

Armed with a Bachelor’s degree in materials science and engineering from Johns Hopkins University, JD excels at explaining difficult STEM subjects like physics, chemistry, and calculus to students in a way that they find approachable and easy to understand. As a native Spanish speaker, JD has also worked with students to make language learning a breeze.

When it comes to tutoring, JD pulls from his time in Stockholm, Sweden, where he was inspired by the bright minds of those around him. This experience deepened his passion for STEM and reinforced his commitment to sharing knowledge with others. He believes in the power of connection and is grounded in principles of honesty, patience, and effective communication. JD endeavors to establish a nurturing environment where errors are not only accepted but also embraced as an important part of the learning process.

When JD isn’t tutoring, you can find him learning to play the electric guitar, practing yoga, and reading Spanish classic literature.

Science | Math | English | SAT | ACT

Joan Reger

We defy you to find a subject Joan can’t teach. Joan is pursuing a PhD in Biology at Georgetown. But she first fell in love with the sciences as a high school student, when great teachers helped her discover the excitement of researching our biological world. She loves tutoring because it helps her pay that forward, and she mentors students with great patience and warmth, gently encouraging them to find their own full potential. A true humanist, Joan is as much at home in the realm of writing and literature as she is in the sciences, and she logged hundreds of hours tutoring high school students in both STEM subjects and English while attending Emory University. She is the ideal tutor for students who want a versatile and confidence-boosting guide and welcome support in multiple subjects.

SAT | ACT | Math | Science | Curriculum Development

Kristen Mastropole

From the Arctic to the Galapagos, Kristen has crossed the oceans as a climate scientist with a passion for biodiversity. She has more than a decade of experience as a tutor, most recently as the director of STEM education at a tutoring center in Hong Kong. Kristen’s breadth of experience with high school students benefits all our students, and she helps design curricula for both standardized tests and general study skills.

And while her research vessels may have taken her to the far corners of the Earth, Kristen always returns to her native DMV, and her students find relevance in her own hometown experiences as a graduate of Georgetown and the Holton-Arms School.

Math | Biology | Physics | Test Prep

Lianna Chung

Lianna is a Georgetown student completing her degree in Computer Science. A transplant from her home state of New Jersey, Lianna brings to the Tungsten Prep team years of tutoring experience with students ranging all the way from elementary school to high school. Along with working with students one-on-one to ensure their success, she also has experience leading online group classes. While she predominately focuses on STEM topics such as middle school and high school math and science, she also supports students through computer science courses and test prep. She is the perfect tutor for any student who is looking for a compassionate, understanding tutor who gently but firmly guides them through the rigors of STEM courses while catering to their needs and interests.

AP History | AP English | AP Psychology | Classical Studies | AP Biology | Reading and Writing

Lindsay Jenkins

Lindsay graduated from Georgetown University, where she majored in Classics and minored in Cognitive Science and Psychology.  As a tutor, she values active listening and deeper connections over superficial interactions and integrates patience, compassion, and empathy into her teaching approach. She specializes in a wide range of subjects for middle and high school students, including reading, writing, English, social studies, history, psychology, government, classical studies, and biology. Her love of tutoring and mentorship has grown since her early formative years, and she has served on the head committee of Georgetown College of Arts and Science’s peer advising program.  

She is an excellent tutor for students who can benefit from gentle, affirmative, and constructive guidance. With her adaptability, positive feedback, and commitment to creating supportive learning environments, she is uniquely suited to help students succeed by tailoring her approach to meet their individual needs. In her spare time, Lindsay enjoys reading, writing poetry, spending time in nature, painting, and playing pick-up soccer.

Math | Science | IB | Test Prep

Nate Malone

Nate specializes in science, math, and test preparation. With a Bachelor of Science degree in Materials Science and Engineering and Chemistry from Johns Hopkins University, Nate is deeply committed to fostering a love for learning among students from diverse backgrounds. Having lived and studied abroad in South India and Argentina, Nate brings a wealth of cultural insights to his teaching approach, valuing the importance of connecting with individuals from various walks of life.

Nate takes great pride in witnessing his students overcome obstacles and develop essential problem-solving skills, whether it pertains to mastering complex equations or excelling in standardized tests. Furthermore, Nate is dedicated to creating a supportive and conducive learning environment where students feel empowered to address their weaknesses and cultivate academic confidence. In his leisure time, Nate enjoys running outdoors and is currently training for an upcoming 50-mile race.

Science | Math | AP Computer Science

Oliver Broadrick

Oliver loves bringing his infectious energy and love of learning to students. As a Division 1 rower, he juggles a demanding academic and extracurricular schedule and loves to help students tackle lofty challenges and meet their own goals. Oliver completed his Master’s degree in Computer Science and Mathematics at GW while working on research in post-election risk-limiting audits. He is now a Ph.D. student at UCLA, further exploring Computer Science. Oliver uses his experience in math and software to show students the exciting real-world payoff of excelling in STEM subjects. He is an outdoors enthusiast who grew up on a Maine farm and believes in finding balance through nature. He is the right tutor for students who need help in multiple STEM subjects or want a high-energy cheerleader in their corner.

Chemistry | Biology | Physics, | Math | Social Studies | English | Test Prep

Philip Sumberaz

Philip is an alumnus of American University, where he immersed himself in his passion for Science within their Biology department. He has integrated research and teaching into his academic journey both during and after his time at American. Since earning his degree, he has contributed to mitochondrial DNA research through UC Riverside’s chemistry department and then transitioned into teaching students within the Riverside School District. During his teaching tenure, he prioritized the creation of inviting and nurturing learning environments and dedicated himself to fostering both academic excellence and personal growth in his students.

Philip would serve as an ideal tutor for any student seeking a consistent and calming presence to guide them through the challenges of advanced sciences, math, social studies, and English. When he’s not busy supporting students, you can find Philip fully immersed in the gaming world!

Calculus | Computer Science | Physics | Economics | Chemistry | Chinese

Ralph Liu

Ralph arrived at Georgetown University with “zero experience” in computer science. Three years later, he became a teaching assistant in the same classes he once struggled in. During his time at Georgetown, he contributed to distributed Graph research and published experiments working in HPC systems at a US National Lab. He now works in Graph analytics as a Systems Engineer at Nvidia.

A nomadic childhood moving between Seoul, Toronto, Boston, Beijing, and Washington, DC, gave him an appreciation for cultural diversity and taught him a cheerful adaptability that helps him connect with a wide range of students in subjects such as STEM, Chinese, and economics. In his spare time, Ralph loves playing badminton, tennis, and guitar.

Bio | Chemistry | Physics | Calculus | Computer Science | Writing | English

Ramsin Yadgar

Ramsin’s lifelong passion for the sciences led him to an early career as an engineer, but his interest in helping people brought him to medicine. He draws on his varied experiences – from a Fortune 500 company to Silicon Valley start-ups to clinical work with patients – to empower his students to embrace their entrepreneurial spirit, be resilient in the face of obstacles, and approach teamwork with compassion and humility. Since completing his medical degree at the George Washington University School of Medicine, he continued his medical training as a current resident in the GW Department of Psychiatry. Concurrently, he diligently pursues his passion for academia by tutoring students across a diverse range of sciences and humanities subjects.

Ramsin began his tutoring career in high school and through college, and he hasn’t stopped since. A proud Californian, he believes the diversity of his home state and his experience working with a wide range of students enables him to adjust his instructional style to suit the unique needs of each learner. Ramsin is the right tutor for students who need support across a wide range of subject, for those tackling multiple AP classes, and for students who need a motivating role model to help them improve their organizational skills and spark their interest in school.

Writing | English Literature | Math | Science | History | Economics

Sofia Romano

Sofia grew up both locally and internationally, settling in places such as the United Arab Emirates, Mexico, Singapore, and various cities throughout the United States. After receiving her bachelor’s degree from Johns Hopkins University in both molecular and cellular biology and sociology, she is beginning her journey into medical school. Her diverse educational and life experiences have afforded her a depth of knowledge that allows her to work with students on a myriad of topics ranging from the humanities to advanced STEM fields. Beyond her years of tutoring experience, Sofia has had the opportunity to work with families in pediatric oncology wards, worked with refugees, and helped neurodivergent students in week-long outdoor courses to open up and connect. Having experience working with both younger and older learners, she is well versed in local school curricula, IB programs, and international studies. Sofia is an excellent and engaging tutor for any student who needs support in multiple areas of study.  

When she is not tutoring, Sofia can be found growing vegetables in her garden or exploring nature through kyaking or backpacking. 

Biology | Chemistry | Math

Andrew Hoy

Andrew is a second-year Ph.D. student at Georgetown University performing research in a biochemistry lab within the Chemistry Department. A self-claimed extrovert, Andrew enjoys finding adventure and sharing his experiences. He brings this love of life to each session, quickly building friendships with each student. From his time as a summer volunteer, a study mentor, and a basketball coach, Andrew carries a cool sense of calm that helps every student feel comfortable and confident as they push past the discomfort of not understanding and into content confidence. He is an excellent tutor for students exploring and building their STEM knowledge because he brings real-world experience to each session.

Test Prep | Math | English | Science | Drama

Anna Walden

Anna’s love of learning and her passion for the stage brings excitement to each of her lessons. As a Hawaii native who has lived, traveled, and performed around the world, she is well versed in connecting with new students from all walks of life. Anna has found herself in roles such as researcher, instructor, writing assistant, coach, and tutor as she traversed the globe. She received her Master of Fine Arts at George Washing University, her Master’s from the Royal Academy of Dramatic Arts in London, and her Bachelor in Creative Writing at Stanford University. With nearly a decade of tutoring experience, Anna makes humanities, STEM, and test prep a breeze. In her free time, she can be found solving a puzzle, hiking, knitting, and spending time with her family.

AP Calculus | AP Statistics | Chemistry | Geometry

Carol Kong

Carol started tutoring at only 15 years old as a peer tutor at her competitive NYC high school and has not stopped since. With over 10 years of experience, Carol is the go-to math tutor for any student who needs a confidence boost delivered with humor and patience. Carol completed her Bachelor’s in Biochemistry from SUNY Plattsburgh and her Master’s degree in Chemistry from American University and she currently works at the National Institutes of Health, where she supports research in neurological diseases and other chronic health conditions. Carol can adapt her teaching style to fit any student’s unique needs and believes math can be enjoyable.

When she is not tutoring, Carol spends her time café journaling with her friends, collecting fountain pens, and trying new restaurants in the DMV area.

Math | Test Prep | Business | Into Accounting | Excel

Catherine Tan

Catherine is currently attending Georgetown University, McDonough School of Business where she is completing her degree in Finance, Operations and Analytics. As a self described extrovert, she enjoys the camaraderie that comes with working with peers and building positive connections with her students. As a tutor who covers a large variety of subjects spanning math, English, and test prep, she brings years of experience and tools with her to the Tungsten Prep team. She is the perfect tutor for even the reluctant student who needs someone who can pull the them out of their shell and help them lay the foundation for lifelong learning.   

When she is not tutoring, Catherine can be found playing tennis or badminton, going for walks, playing board games, or trying new and delicious food around D.C.

AP Physics | Math | Test Prep

Charlezetta Stokes

Charley, a veteran of Detroit’s most prestigious STEM high school, she can empathize with her students’ journey through the sometimes-terrifying realm of AP Physics and Calculus, and her passion for science helps them come out the other side with a newfound sense of wonder for the natural world. She was a natural addition to our test prep team, where she has helped students reach their goals time and time again.

Charley completed her Ph.D. in Physics at Howard, where her research focused on nanomaterials. Charley’s work has taken her to the intersection between Physics and daily life, from the Ford Motor Company’s Scientific Research Laboratories to the Stanford Linear Accelerator Center to NIST’s Center for Neutron Center. Her unmatched passion helps her students recognize that science is a part of life, and when we put our fears aside, there is nothing we cannot master.

AP Biology | AP Chemistry | AP Environmental Science | Math | English

Erin Conn

Erin’s passion for science has led her to become a dedicated advocate for equity in STEM and higher education. After some timely tweets on women in science went viral, she was able to raise funds to establish the first graduate student group in STEM focused on equity and inclusion at Georgetown, where she earned her Ph.D. in Biochemistry. She now works at the American Association for the Advancement of Science’s SEA Change Initiative, which is dedicated to advancing diversity, equity and inclusion in higher education.

Erin’s love of teaching is driven by the extraordinary mentors she herself has enjoyed, and she hopes to pay that forward by inspiring scientific curiosity and confidence in her students. As a college athlete, she also loves helping students develop a healthy balance that enables them to achieve both academic and extracurricular goals.

Math | Spanish | SAT | ACT

Greta Batista

From a middle schooler who “hated” math to president of the George Washington University Association of Women in Math, Greta recognizes that a confidence boost and good study habits can help any student find their inner math enthusiast. This Northern Virginia native has been tutoring students in math, English and Spanish since high school and understands the unique pressures that local students face. A born extrovert, Greta enjoys learning about her students’ interests to motivate them. She is a native Spanish speaker and has degrees in both math and political science from GWU. She enjoys working with students who want help in a broad range of subjects.

Statistics | Biology | Math

Grier Glynn

Grier is a highly motivated and detail-oriented tutor currently majoring in Statistics at George Washington University. With minors in Biology and Data Science, she possesses a broad spectrum of knowledge in STEM subjects, making her an ideal tutor for students in need of comprehensive support. Grier’s analytical skills enable her to assist students in making informed academic decisions and facilitate meaningful content review. Her participation in the Spatial Stats REU at Georgetown University allows her to bridge the gap between classroom concepts and their real-world applications. Beyond tutoring, Grier holds leadership positions that reflect her commitment to collaborative thinking, which she brings to her interactions with students. She takes great pleasure in guiding students through the captivating realms of math, science, computer science, and statistics. When she’s not working with students, you can find her scaling rock walls with her friends.

Chemistry | Biology | Statistics | Physics | Spanish | ACT Prep

Hunter Hendrix

Hunter is a graduate of Johns Hopkins University, where he studied Biophysics. He is now attending Standford Law School in CA. His STEM background, Spanish proficiency, and law aspirations enable him to tackle a wide variety of subjects and provide an interdisciplinary teaching approach to topics such as science, math, Spanish, and ACT Prep. He brings years of tutoring experience to the Tungsten Prep team from his time supporting college and high school students at Hopkins. Any student looking for a tutor who can help connect the dots between various topics and the world around them would find comfort in working with Hunter! He enjoys whitewater kayaking, true crime, and crocheting when he isn’t working!

Physics | Chemistry | Calculus AB | Spanish | Test Prep

JD Carrizo

Armed with a Bachelor’s degree in materials science and engineering from Johns Hopkins University, JD excels at explaining difficult STEM subjects like physics, chemistry, and calculus to students in a way that they find approachable and easy to understand. As a native Spanish speaker, JD has also worked with students to make language learning a breeze.

When it comes to tutoring, JD pulls from his time in Stockholm, Sweden, where he was inspired by the bright minds of those around him. This experience deepened his passion for STEM and reinforced his commitment to sharing knowledge with others. He believes in the power of connection and is grounded in principles of honesty, patience, and effective communication. JD endeavors to establish a nurturing environment where errors are not only accepted but also embraced as an important part of the learning process.

When JD isn’t tutoring, you can find him learning to play the electric guitar, practing yoga, and reading Spanish classic literature.

Science | Math | English | SAT | ACT

Joan Reger

We defy you to find a subject Joan can’t teach. Joan is pursuing a PhD in Biology at Georgetown. But she first fell in love with the sciences as a high school student, when great teachers helped her discover the excitement of researching our biological world. She loves tutoring because it helps her pay that forward, and she mentors students with great patience and warmth, gently encouraging them to find their own full potential. A true humanist, Joan is as much at home in the realm of writing and literature as she is in the sciences, and she logged hundreds of hours tutoring high school students in both STEM subjects and English while attending Emory University. She is the ideal tutor for students who want a versatile and confidence-boosting guide and welcome support in multiple subjects.

Math | History | English | Spanish

Kaitlin Rogers

Kaitlin loves to help students discover the talents they often can’t fully see. She has designed study skills and college readiness programs for first-generation college students in her hometown of Madison, Wisconsin, and taught a course at Furman University that helped students with different social identities engage in conversations to develop empathy and dialogue skills. Her experiences led her to Howard University, where she is pursuing a master’s degree in History. In her spare time, Kaitlin loves cooking, riding her bike and spending time with her friends and partner.

Algebra I & II | Precalculus | Probability & Statistics

Kayla Kelly

Kayla received her B.S. in Economics with a concentration in Applied Mathematics with Honors from the Georgia Institute of Technology (Georgia Tech) and her Master of Science in Education-Educational Studies with a concentration in Secondary Mathematics and Special Education from The Johns Hopkins University. While at Georgia Tech, Kayla received multiple awards for her scholastic achievements and was inducted into Omicron Delta Epsilon National Economics Honor Society and Pi Mu Epsilon National Mathematics Honor Society. Kayla is a three-time recipient of Georgia Tech’s Office of Minority Education (OMED) Tower Award for academic achievement. As an undergraduate, Kayla was also involved and led multiple organizations on campus, including the Jumpstart Americorps program and Georgia Tech’s Women Awareness Month (WAM) and Martin Luther King Jr. Celebration Day committees.

In addition to her academic pursuits, Kayla also gained a variety of professional experience as an intern with the District of Columbia Department of Health (DOH), the District of Columbia Office of the Deputy Mayor for Planning and Economic Development (DMPED), the Georgia Department of Economic Development (GDecD), Accenture Federal Services (AFS), and Northwestern Mutual. Kayla is also involved within her community, as she serves on the Education Achievement Day committee at her church, the Georgia Tech Alumni Association’s (GTAA) Graduates of the Last Decade (GOLD) Advisory Board, The Holton-Arms School Alumnae Board, a Regional Network Leader for the Georgia Tech DC Alumni Network, D.C. Public Schools Technology Advisory Committee, a mentor for Georgia Tech’s Mentor Jackets program, and a volunteer at Martha’s Table. Kayla previously served on the Caribbean Political Action Committee (C-PAC)’s Young Adult Initiative committee and was the Mentorship and Professional Development Lead of the DC Chapter of Women Who Code. Kayla is currently an educator for D.C. Public Schools and the Vice President of The Kelly Group L.L.C., a business and educational consulting practice based in Washington, D.C. 

SAT | ACT | Math | Science | Curriculum Development

Kristen Mastropole

From the Arctic to the Galapagos, Kristen has crossed the oceans as a climate scientist with a passion for biodiversity. She has more than a decade of experience as a tutor, most recently as the director of STEM education at a tutoring center in Hong Kong. Kristen’s breadth of experience with high school students benefits all our students, and she helps design curricula for both standardized tests and general study skills.

And while her research vessels may have taken her to the far corners of the Earth, Kristen always returns to her native DMV, and her students find relevance in her own hometown experiences as a graduate of Georgetown and the Holton-Arms School.

Math | Biology | Physics | Test Prep

Lianna Chung

Lianna is a Georgetown student completing her degree in Computer Science. A transplant from her home state of New Jersey, Lianna brings to the Tungsten Prep team years of tutoring experience with students ranging all the way from elementary school to high school. Along with working with students one-on-one to ensure their success, she also has experience leading online group classes. While she predominately focuses on STEM topics such as middle school and high school math and science, she also supports students through computer science courses and test prep. She is the perfect tutor for any student who is looking for a compassionate, understanding tutor who gently but firmly guides them through the rigors of STEM courses while catering to their needs and interests.

Math | Science | IB | Test Prep

Nate Malone

Nate specializes in science, math, and test preparation. With a Bachelor of Science degree in Materials Science and Engineering and Chemistry from Johns Hopkins University, Nate is deeply committed to fostering a love for learning among students from diverse backgrounds. Having lived and studied abroad in South India and Argentina, Nate brings a wealth of cultural insights to his teaching approach, valuing the importance of connecting with individuals from various walks of life.

Nate takes great pride in witnessing his students overcome obstacles and develop essential problem-solving skills, whether it pertains to mastering complex equations or excelling in standardized tests. Furthermore, Nate is dedicated to creating a supportive and conducive learning environment where students feel empowered to address their weaknesses and cultivate academic confidence. In his leisure time, Nate enjoys running outdoors and is currently training for an upcoming 50-mile race.

Math | Physics

Neeraj Tatikola

Neeraj’s love of teaching goes back to middle school when a teacher started a summer book club. The experience of having his instructor push him to question his preconceived limits exposed him to the life-changing superpowers of a great teacher. Neeraj taught math, statistics, and physics at Penn State, while serving as a tutor to Division I athletes, where he learned to motivate busy students and help them juggle competing priorities. After passing all his actuarial exams and working for 4 years as a pension actuary, Neeraj is now pursuing graduate studies in Mathematics, currently serving as a teaching assistant at Lehigh University. He is a firm believer in prioritizing health and well-being through both physical exercise, such as yoga and weight training, and mental exercise, via meditation & mindfulness practices.

Science | Math | AP Computer Science

Oliver Broadrick

Oliver loves bringing his infectious energy and love of learning to students. As a Division 1 rower, he juggles a demanding academic and extracurricular schedule and loves to help students tackle lofty challenges and meet their own goals. Oliver completed his Master’s degree in Computer Science and Mathematics at GW while working on research in post-election risk-limiting audits. He is now a Ph.D. student at UCLA, further exploring Computer Science. Oliver uses his experience in math and software to show students the exciting real-world payoff of excelling in STEM subjects. He is an outdoors enthusiast who grew up on a Maine farm and believes in finding balance through nature. He is the right tutor for students who need help in multiple STEM subjects or want a high-energy cheerleader in their corner.

Chemistry | Biology | Physics, | Math | Social Studies | English | Test Prep

Philip Sumberaz

Philip is an alumnus of American University, where he immersed himself in his passion for Science within their Biology department. He has integrated research and teaching into his academic journey both during and after his time at American. Since earning his degree, he has contributed to mitochondrial DNA research through UC Riverside’s chemistry department and then transitioned into teaching students within the Riverside School District. During his teaching tenure, he prioritized the creation of inviting and nurturing learning environments and dedicated himself to fostering both academic excellence and personal growth in his students.

Philip would serve as an ideal tutor for any student seeking a consistent and calming presence to guide them through the challenges of advanced sciences, math, social studies, and English. When he’s not busy supporting students, you can find Philip fully immersed in the gaming world!

Calculus | Computer Science | Physics | Economics | Chemistry | Chinese

Ralph Liu

Ralph arrived at Georgetown University with “zero experience” in computer science. Three years later, he became a teaching assistant in the same classes he once struggled in. During his time at Georgetown, he contributed to distributed Graph research and published experiments working in HPC systems at a US National Lab. He now works in Graph analytics as a Systems Engineer at Nvidia.

A nomadic childhood moving between Seoul, Toronto, Boston, Beijing, and Washington, DC, gave him an appreciation for cultural diversity and taught him a cheerful adaptability that helps him connect with a wide range of students in subjects such as STEM, Chinese, and economics. In his spare time, Ralph loves playing badminton, tennis, and guitar.

Bio | Chemistry | Physics | Calculus | Computer Science | Writing | English

Ramsin Yadgar

Ramsin’s lifelong passion for the sciences led him to an early career as an engineer, but his interest in helping people brought him to medicine. He draws on his varied experiences – from a Fortune 500 company to Silicon Valley start-ups to clinical work with patients – to empower his students to embrace their entrepreneurial spirit, be resilient in the face of obstacles, and approach teamwork with compassion and humility. Since completing his medical degree at the George Washington University School of Medicine, he continued his medical training as a current resident in the GW Department of Psychiatry. Concurrently, he diligently pursues his passion for academia by tutoring students across a diverse range of sciences and humanities subjects.

Ramsin began his tutoring career in high school and through college, and he hasn’t stopped since. A proud Californian, he believes the diversity of his home state and his experience working with a wide range of students enables him to adjust his instructional style to suit the unique needs of each learner. Ramsin is the right tutor for students who need support across a wide range of subject, for those tackling multiple AP classes, and for students who need a motivating role model to help them improve their organizational skills and spark their interest in school.

Writing | English Literature | Math | Science | History | Economics

Sofia Romano

Sofia grew up both locally and internationally, settling in places such as the United Arab Emirates, Mexico, Singapore, and various cities throughout the United States. After receiving her bachelor’s degree from Johns Hopkins University in both molecular and cellular biology and sociology, she is beginning her journey into medical school. Her diverse educational and life experiences have afforded her a depth of knowledge that allows her to work with students on a myriad of topics ranging from the humanities to advanced STEM fields. Beyond her years of tutoring experience, Sofia has had the opportunity to work with families in pediatric oncology wards, worked with refugees, and helped neurodivergent students in week-long outdoor courses to open up and connect. Having experience working with both younger and older learners, she is well versed in local school curricula, IB programs, and international studies. Sofia is an excellent and engaging tutor for any student who needs support in multiple areas of study.  

When she is not tutoring, Sofia can be found growing vegetables in her garden or exploring nature through kyaking or backpacking. 

Spanish | Computer Science | Social Studies | Math

Victor Ke

Victor is currently attending Johns Hopkins University, where he is a student researcher pursuing his master’s degree in health communication and education. This self-described ambivert hails from Southern California and embodies adaptability and an understanding disposition, which are crucial qualities for any tutor. Victor firmly believes that establishing meaningful connections and effective communication enhance every tutoring session, fostering a positive learning environment for his students. He recognizes the importance of tailoring his teaching methods to the unique needs of each student, adopting a personalized approach that ensures maximum engagement and comprehension. His experience with the International Rescue Committee has provided him with opportunities to connect with and build relationships with newly settled refugees as they navigate their lives.

Victor’s extensive range of subjects, including math, history, English, Spanish, and computer science, makes him an excellent tutor for students seeking in-depth exploration of various topics or general academic support. As a native Spanish speaker, he is particularly adept at assisting students with the intricate concepts encountered in advanced Spanish classes. When Victor is not tutoring, you can find him supporting his favorite team, Arsenal, or engaging in outdoor activities. His kind and personable demeanor make him the perfect tutor even for the most reluctant of students.

AP English | History | Spanish

Caitlin Jordan

Caitlin is a lover of all things literary. She completed her Master’s in English Literature at Georgetown University. Caitlin has taught Middle School and High School English in Florida and Idaho, where she served as a full-time residential advisor and summer camp counselor. She is currently working as a history teacher for both 7th and 8th-grade students at a private school, but her teaching experience includes high school history as well as English. Her experience living and working with adolescents gives her empathy for her student’s goals and interests and ensures she keeps them laughing. From the passionate reader to the reluctant writer, Caitlin loves meeting her students where they are and helping them find their inner bookworm. Whether they are vexed by grammar, bored by literature, or possibly in throws of understanding the Roman empire, Caitlin loves building her students’ understanding from the ground up.

French | English | Social Studies | Writing

Emily Somberg

Emily was raised halfway between Washington and Paris and serves as a linguistic and cultural interpreter for her students. She helps students get to the bottom of French grammar, History, test prep, and general studies. She has a particular knack for students, and her patient and systematic approach helps those newer to homework refine their test-taking, critical thinking, and time-management skills. Emily has a master’s degree in anthropology from George Washington University. She is the perfect tutor for any middle or high school student looking to explore the depths of school and see how it all connects. She currently works in law and loves to hike and cook when she’s not tutoring.

Science | Test Prep | General Studies | Biology | English | Social Studies

Jenna Wiegand

Jenna Wiegand earned her Ph.D. from the University of California, Riverside, in Environmental Sciences before returning to the east coast to work at the Environmental Protection Agency. While at UC Riverside, her research highlighted the impact of specific chemicals on zebrafish development, and thus, the impact on ecosystems and humans. When not presenting at conferences and publishing papers, she mentored undergraduate students through the rigors of higher education and the Ph.D. process.

As someone diagnosed with ADHD in her Junior year of college and who struggled with procrastination, test anxiety, and organization for years, Jenna understands what it is like to be misunderstood by teachers. She has made it a top goal to help students reach their full potential by understanding how they learn and what they wish to accomplish. Her intentional approach and understanding disposition help her to enthusiastically support students through test prep, science, and general studies. She can help even the most defeated student feel a sense of confidence both inside and outside the classroom.

AP US History | AP Government | AP World Geography | AP World History | Reading | Writing | ESL | General Studies

Juliana Morrison

Juliana holds a Master of Arts in Education, specializing in Curriculum and Instruction of Secondary Social Studies from the College of William and Mary. She is licensed to teach English as a second language and is College Board Certified in AP US Government and Politics. Throughout her career, she has developed and implemented engaging curricula that emphasize critical thinking, research skills, effective communication, and collaboration. Juliana has worked with middle and high school students in AP Boot Camp to facilitate their transition from honors courses to AP classes, specifically focusing on AP Human Geography, World History, US Government, and US History. Currently, she teaches social studies at a high school in northern Virginia. Prior to this position, she served as a Social Studies Team Lead, providing support to K-8 students in Alexandria.

With her extensive experience and education, Juliana is equipped to deliver exceptional instruction. She incorporates SEAL (Social, Emotional, and Academic Learning) lessons into her teaching, emphasizing coping mechanisms, time management, self-care, and clear communication. Her skill set enables her to work effectively with students possessing a wide range of personalities, academic abilities, and socioemotional needs. Juliana is the ideal tutor for any student seeking patient, intentional, and kind support.

Math | History | English | Spanish

Kaitlin Rogers

Kaitlin loves to help students discover the talents they often can’t fully see. She has designed study skills and college readiness programs for first-generation college students in her hometown of Madison, Wisconsin, and taught a course at Furman University that helped students with different social identities engage in conversations to develop empathy and dialogue skills. Her experiences led her to Howard University, where she is pursuing a master’s degree in History. In her spare time, Kaitlin loves cooking, riding her bike and spending time with her friends and partner.

AP History | AP English | AP Psychology | Classical Studies | AP Biology | Reading and Writing

Lindsay Jenkins

Lindsay graduated from Georgetown University, where she majored in Classics and minored in Cognitive Science and Psychology.  As a tutor, she values active listening and deeper connections over superficial interactions and integrates patience, compassion, and empathy into her teaching approach. She specializes in a wide range of subjects for middle and high school students, including reading, writing, English, social studies, history, psychology, government, classical studies, and biology. Her love of tutoring and mentorship has grown since her early formative years, and she has served on the head committee of Georgetown College of Arts and Science’s peer advising program.  

She is an excellent tutor for students who can benefit from gentle, affirmative, and constructive guidance. With her adaptability, positive feedback, and commitment to creating supportive learning environments, she is uniquely suited to help students succeed by tailoring her approach to meet their individual needs. In her spare time, Lindsay enjoys reading, writing poetry, spending time in nature, painting, and playing pick-up soccer.

AP English | AP World History | AP U.S. History | Latin | Greek

Matthew Fredericks

Matthew never achieved his childhood dream of becoming the next Michael Jordan, but he has bicycled across the United States, runs marathons and loves to share his wide-ranging book tastes with his students. An area native, he returned to Washington, DC after recovering from a travel bug that took him to 59 countries. He has taught Math and History for Teach for America in Brooklyn and currently teaches Latin at Bishop McNamara High School in Maryland. Never one to sit still, he is also pursuing graduate studies in Classics at Georgetown University. His motivation to push his body and mind is mirrored in his knack for pushing students to reach outside their comfort zone while ensuring that they come away with greater confidence and an improved understanding of the subject at hand.

Chemistry | Biology | Physics, | Math | Social Studies | English | Test Prep

Philip Sumberaz

Philip is an alumnus of American University, where he immersed himself in his passion for Science within their Biology department. He has integrated research and teaching into his academic journey both during and after his time at American. Since earning his degree, he has contributed to mitochondrial DNA research through UC Riverside’s chemistry department and then transitioned into teaching students within the Riverside School District. During his teaching tenure, he prioritized the creation of inviting and nurturing learning environments and dedicated himself to fostering both academic excellence and personal growth in his students.

Philip would serve as an ideal tutor for any student seeking a consistent and calming presence to guide them through the challenges of advanced sciences, math, social studies, and English. When he’s not busy supporting students, you can find Philip fully immersed in the gaming world!

English | Reading | Writing | Government | TOEFL | SAT and ACT Verbal

Nancy Wolf

Nancy stands steadfast that learning can, and should, have both a sense of fun and achievement. This long-time native of Maryland carried this sentiment with her through law school, her time at a communications law firm in DC, and now as a tutor working with students of all ages to build confidence and a sense of comfort in learning. Her mental health advocacy background helps create a space for her students to feel heard, appreciated, and understood while navigating coursework and school hardships. She is an excellent tutor for any student looking for support in English, Government, Reading, Writing, English as a Second Language, or college essay support.

Writing | English Literature | Math | Science | History | Economics

Sofia Romano

Sofia grew up both locally and internationally, settling in places such as the United Arab Emirates, Mexico, Singapore, and various cities throughout the United States. After receiving her bachelor’s degree from Johns Hopkins University in both molecular and cellular biology and sociology, she is beginning her journey into medical school. Her diverse educational and life experiences have afforded her a depth of knowledge that allows her to work with students on a myriad of topics ranging from the humanities to advanced STEM fields. Beyond her years of tutoring experience, Sofia has had the opportunity to work with families in pediatric oncology wards, worked with refugees, and helped neurodivergent students in week-long outdoor courses to open up and connect. Having experience working with both younger and older learners, she is well versed in local school curricula, IB programs, and international studies. Sofia is an excellent and engaging tutor for any student who needs support in multiple areas of study.  

When she is not tutoring, Sofia can be found growing vegetables in her garden or exploring nature through kyaking or backpacking. 

Spanish | Computer Science | Social Studies | Math

Victor Ke

Victor is currently attending Johns Hopkins University, where he is a student researcher pursuing his master’s degree in health communication and education. This self-described ambivert hails from Southern California and embodies adaptability and an understanding disposition, which are crucial qualities for any tutor. Victor firmly believes that establishing meaningful connections and effective communication enhance every tutoring session, fostering a positive learning environment for his students. He recognizes the importance of tailoring his teaching methods to the unique needs of each student, adopting a personalized approach that ensures maximum engagement and comprehension. His experience with the International Rescue Committee has provided him with opportunities to connect with and build relationships with newly settled refugees as they navigate their lives.

Victor’s extensive range of subjects, including math, history, English, Spanish, and computer science, makes him an excellent tutor for students seeking in-depth exploration of various topics or general academic support. As a native Spanish speaker, he is particularly adept at assisting students with the intricate concepts encountered in advanced Spanish classes. When Victor is not tutoring, you can find him supporting his favorite team, Arsenal, or engaging in outdoor activities. His kind and personable demeanor make him the perfect tutor even for the most reluctant of students.

Test Prep | Math | English | Science | Drama

Anna Walden

Anna’s love of learning and her passion for the stage brings excitement to each of her lessons. As a Hawaii native who has lived, traveled, and performed around the world, she is well versed in connecting with new students from all walks of life. Anna has found herself in roles such as researcher, instructor, writing assistant, coach, and tutor as she traversed the globe. She received her Master of Fine Arts at George Washing University, her Master’s from the Royal Academy of Dramatic Arts in London, and her Bachelor in Creative Writing at Stanford University. With nearly a decade of tutoring experience, Anna makes humanities, STEM, and test prep a breeze. In her free time, she can be found solving a puzzle, hiking, knitting, and spending time with her family.

AP English | History | Spanish

Caitlin Jordan

Caitlin is a lover of all things literary. She completed her Master’s in English Literature at Georgetown University. Caitlin has taught Middle School and High School English in Florida and Idaho, where she served as a full-time residential advisor and summer camp counselor. She is currently working as a history teacher for both 7th and 8th-grade students at a private school, but her teaching experience includes high school history as well as English. Her experience living and working with adolescents gives her empathy for her student’s goals and interests and ensures she keeps them laughing. From the passionate reader to the reluctant writer, Caitlin loves meeting her students where they are and helping them find their inner bookworm. Whether they are vexed by grammar, bored by literature, or possibly in throws of understanding the Roman empire, Caitlin loves building her students’ understanding from the ground up.

English | Writing

Dawn Henderson

Dawn loves to help students discover the magic in books. From the mechanics of grammar to the weightiest literature topics, this seasoned teacher leads students through all the stages of competent and confident writing. Dawn is completing her PhD in African-American Literature at Howard University, but it was overcoming childhood struggles with reading that set her on a lifelong mission to help others experience that moment of understanding, clarity, and intrigue that comes from learning something new. Dawn’s own interests are wide-ranging, from a passion for travel to a love of gardening, cooking, and writing poetry and she brings her curiosity and positivity to each of her students.

French | English | Social Studies | Writing

Emily Somberg

Emily was raised halfway between Washington and Paris and serves as a linguistic and cultural interpreter for her students. She helps students get to the bottom of French grammar, History, test prep, and general studies. She has a particular knack for students, and her patient and systematic approach helps those newer to homework refine their test-taking, critical thinking, and time-management skills. Emily has a master’s degree in anthropology from George Washington University. She is the perfect tutor for any middle or high school student looking to explore the depths of school and see how it all connects. She currently works in law and loves to hike and cook when she’s not tutoring.

AP Biology | AP Chemistry | AP Environmental Science | Math | English

Erin Conn

Erin’s passion for science has led her to become a dedicated advocate for equity in STEM and higher education. After some timely tweets on women in science went viral, she was able to raise funds to establish the first graduate student group in STEM focused on equity and inclusion at Georgetown, where she earned her Ph.D. in Biochemistry. She now works at the American Association for the Advancement of Science’s SEA Change Initiative, which is dedicated to advancing diversity, equity and inclusion in higher education.

Erin’s love of teaching is driven by the extraordinary mentors she herself has enjoyed, and she hopes to pay that forward by inspiring scientific curiosity and confidence in her students. As a college athlete, she also loves helping students develop a healthy balance that enables them to achieve both academic and extracurricular goals.

Science | Test Prep | General Studies | Biology | English | Social Studies

Jenna Wiegand

Jenna Wiegand earned her Ph.D. from the University of California, Riverside, in Environmental Sciences before returning to the east coast to work at the Environmental Protection Agency. While at UC Riverside, her research highlighted the impact of specific chemicals on zebrafish development, and thus, the impact on ecosystems and humans. When not presenting at conferences and publishing papers, she mentored undergraduate students through the rigors of higher education and the Ph.D. process.

As someone diagnosed with ADHD in her Junior year of college and who struggled with procrastination, test anxiety, and organization for years, Jenna understands what it is like to be misunderstood by teachers. She has made it a top goal to help students reach their full potential by understanding how they learn and what they wish to accomplish. Her intentional approach and understanding disposition help her to enthusiastically support students through test prep, science, and general studies. She can help even the most defeated student feel a sense of confidence both inside and outside the classroom.

Science | Math | English | SAT | ACT

Joan Reger

We defy you to find a subject Joan can’t teach. Joan is pursuing a PhD in Biology at Georgetown. But she first fell in love with the sciences as a high school student, when great teachers helped her discover the excitement of researching our biological world. She loves tutoring because it helps her pay that forward, and she mentors students with great patience and warmth, gently encouraging them to find their own full potential. A true humanist, Joan is as much at home in the realm of writing and literature as she is in the sciences, and she logged hundreds of hours tutoring high school students in both STEM subjects and English while attending Emory University. She is the ideal tutor for students who want a versatile and confidence-boosting guide and welcome support in multiple subjects.

AP US History | AP Government | AP World Geography | AP World History | Reading | Writing | ESL | General Studies

Juliana Morrison

Juliana holds a Master of Arts in Education, specializing in Curriculum and Instruction of Secondary Social Studies from the College of William and Mary. She is licensed to teach English as a second language and is College Board Certified in AP US Government and Politics. Throughout her career, she has developed and implemented engaging curricula that emphasize critical thinking, research skills, effective communication, and collaboration. Juliana has worked with middle and high school students in AP Boot Camp to facilitate their transition from honors courses to AP classes, specifically focusing on AP Human Geography, World History, US Government, and US History. Currently, she teaches social studies at a high school in northern Virginia. Prior to this position, she served as a Social Studies Team Lead, providing support to K-8 students in Alexandria.

With her extensive experience and education, Juliana is equipped to deliver exceptional instruction. She incorporates SEAL (Social, Emotional, and Academic Learning) lessons into her teaching, emphasizing coping mechanisms, time management, self-care, and clear communication. Her skill set enables her to work effectively with students possessing a wide range of personalities, academic abilities, and socioemotional needs. Juliana is the ideal tutor for any student seeking patient, intentional, and kind support.

AP History | AP English | AP Psychology | Classical Studies | AP Biology | Reading and Writing

Lindsay Jenkins

Lindsay graduated from Georgetown University, where she majored in Classics and minored in Cognitive Science and Psychology.  As a tutor, she values active listening and deeper connections over superficial interactions and integrates patience, compassion, and empathy into her teaching approach. She specializes in a wide range of subjects for middle and high school students, including reading, writing, English, social studies, history, psychology, government, classical studies, and biology. Her love of tutoring and mentorship has grown since her early formative years, and she has served on the head committee of Georgetown College of Arts and Science’s peer advising program.  

She is an excellent tutor for students who can benefit from gentle, affirmative, and constructive guidance. With her adaptability, positive feedback, and commitment to creating supportive learning environments, she is uniquely suited to help students succeed by tailoring her approach to meet their individual needs. In her spare time, Lindsay enjoys reading, writing poetry, spending time in nature, painting, and playing pick-up soccer.

AP English | AP World History | AP U.S. History | Latin | Greek

Matthew Fredericks

Matthew never achieved his childhood dream of becoming the next Michael Jordan, but he has bicycled across the United States, runs marathons and loves to share his wide-ranging book tastes with his students. An area native, he returned to Washington, DC after recovering from a travel bug that took him to 59 countries. He has taught Math and History for Teach for America in Brooklyn and currently teaches Latin at Bishop McNamara High School in Maryland. Never one to sit still, he is also pursuing graduate studies in Classics at Georgetown University. His motivation to push his body and mind is mirrored in his knack for pushing students to reach outside their comfort zone while ensuring that they come away with greater confidence and an improved understanding of the subject at hand.

Chemistry | Biology | Physics, | Math | Social Studies | English | Test Prep

Philip Sumberaz

Philip is an alumnus of American University, where he immersed himself in his passion for Science within their Biology department. He has integrated research and teaching into his academic journey both during and after his time at American. Since earning his degree, he has contributed to mitochondrial DNA research through UC Riverside’s chemistry department and then transitioned into teaching students within the Riverside School District. During his teaching tenure, he prioritized the creation of inviting and nurturing learning environments and dedicated himself to fostering both academic excellence and personal growth in his students.

Philip would serve as an ideal tutor for any student seeking a consistent and calming presence to guide them through the challenges of advanced sciences, math, social studies, and English. When he’s not busy supporting students, you can find Philip fully immersed in the gaming world!

English | Reading | Writing | Government | TOEFL | SAT and ACT Verbal

Nancy Wolf

Nancy stands steadfast that learning can, and should, have both a sense of fun and achievement. This long-time native of Maryland carried this sentiment with her through law school, her time at a communications law firm in DC, and now as a tutor working with students of all ages to build confidence and a sense of comfort in learning. Her mental health advocacy background helps create a space for her students to feel heard, appreciated, and understood while navigating coursework and school hardships. She is an excellent tutor for any student looking for support in English, Government, Reading, Writing, English as a Second Language, or college essay support.

Writing | English Literature | Math | Science | History | Economics

Sofia Romano

Sofia grew up both locally and internationally, settling in places such as the United Arab Emirates, Mexico, Singapore, and various cities throughout the United States. After receiving her bachelor’s degree from Johns Hopkins University in both molecular and cellular biology and sociology, she is beginning her journey into medical school. Her diverse educational and life experiences have afforded her a depth of knowledge that allows her to work with students on a myriad of topics ranging from the humanities to advanced STEM fields. Beyond her years of tutoring experience, Sofia has had the opportunity to work with families in pediatric oncology wards, worked with refugees, and helped neurodivergent students in week-long outdoor courses to open up and connect. Having experience working with both younger and older learners, she is well versed in local school curricula, IB programs, and international studies. Sofia is an excellent and engaging tutor for any student who needs support in multiple areas of study.  

When she is not tutoring, Sofia can be found growing vegetables in her garden or exploring nature through kyaking or backpacking. 

Test Prep | Math | English | Science | Drama

Anna Walden

Anna’s love of learning and her passion for the stage brings excitement to each of her lessons. As a Hawaii native who has lived, traveled, and performed around the world, she is well versed in connecting with new students from all walks of life. Anna has found herself in roles such as researcher, instructor, writing assistant, coach, and tutor as she traversed the globe. She received her Master of Fine Arts at George Washing University, her Master’s from the Royal Academy of Dramatic Arts in London, and her Bachelor in Creative Writing at Stanford University. With nearly a decade of tutoring experience, Anna makes humanities, STEM, and test prep a breeze. In her free time, she can be found solving a puzzle, hiking, knitting, and spending time with her family.

Math | Test Prep | Business | Into Accounting | Excel

Catherine Tan

Catherine is currently attending Georgetown University, McDonough School of Business where she is completing her degree in Finance, Operations and Analytics. As a self described extrovert, she enjoys the camaraderie that comes with working with peers and building positive connections with her students. As a tutor who covers a large variety of subjects spanning math, English, and test prep, she brings years of experience and tools with her to the Tungsten Prep team. She is the perfect tutor for even the reluctant student who needs someone who can pull the them out of their shell and help them lay the foundation for lifelong learning.   

When she is not tutoring, Catherine can be found playing tennis or badminton, going for walks, playing board games, or trying new and delicious food around D.C.

AP Physics | Math | Test Prep

Charlezetta Stokes

Charley, a veteran of Detroit’s most prestigious STEM high school, she can empathize with her students’ journey through the sometimes-terrifying realm of AP Physics and Calculus, and her passion for science helps them come out the other side with a newfound sense of wonder for the natural world. She was a natural addition to our test prep team, where she has helped students reach their goals time and time again.

Charley completed her Ph.D. in Physics at Howard, where her research focused on nanomaterials. Charley’s work has taken her to the intersection between Physics and daily life, from the Ford Motor Company’s Scientific Research Laboratories to the Stanford Linear Accelerator Center to NIST’s Center for Neutron Center. Her unmatched passion helps her students recognize that science is a part of life, and when we put our fears aside, there is nothing we cannot master.

Math | Spanish | SAT | ACT

Greta Batista

From a middle schooler who “hated” math to president of the George Washington University Association of Women in Math, Greta recognizes that a confidence boost and good study habits can help any student find their inner math enthusiast. This Northern Virginia native has been tutoring students in math, English and Spanish since high school and understands the unique pressures that local students face. A born extrovert, Greta enjoys learning about her students’ interests to motivate them. She is a native Spanish speaker and has degrees in both math and political science from GWU. She enjoys working with students who want help in a broad range of subjects.

Chemistry | Biology | Statistics | Physics | Spanish | ACT Prep

Hunter Hendrix

Hunter is a graduate of Johns Hopkins University, where he studied Biophysics. He is now attending Standford Law School in CA. His STEM background, Spanish proficiency, and law aspirations enable him to tackle a wide variety of subjects and provide an interdisciplinary teaching approach to topics such as science, math, Spanish, and ACT Prep. He brings years of tutoring experience to the Tungsten Prep team from his time supporting college and high school students at Hopkins. Any student looking for a tutor who can help connect the dots between various topics and the world around them would find comfort in working with Hunter! He enjoys whitewater kayaking, true crime, and crocheting when he isn’t working!

French | English | Social Studies | Writing

Emily Somberg

Emily was raised halfway between Washington and Paris and serves as a linguistic and cultural interpreter for her students. She helps students get to the bottom of French grammar, History, test prep, and general studies. She has a particular knack for students, and her patient and systematic approach helps those newer to homework refine their test-taking, critical thinking, and time-management skills. Emily has a master’s degree in anthropology from George Washington University. She is the perfect tutor for any middle or high school student looking to explore the depths of school and see how it all connects. She currently works in law and loves to hike and cook when she’s not tutoring.

Physics | Chemistry | Calculus AB | Spanish | Test Prep

JD Carrizo

Armed with a Bachelor’s degree in materials science and engineering from Johns Hopkins University, JD excels at explaining difficult STEM subjects like physics, chemistry, and calculus to students in a way that they find approachable and easy to understand. As a native Spanish speaker, JD has also worked with students to make language learning a breeze.

When it comes to tutoring, JD pulls from his time in Stockholm, Sweden, where he was inspired by the bright minds of those around him. This experience deepened his passion for STEM and reinforced his commitment to sharing knowledge with others. He believes in the power of connection and is grounded in principles of honesty, patience, and effective communication. JD endeavors to establish a nurturing environment where errors are not only accepted but also embraced as an important part of the learning process.

When JD isn’t tutoring, you can find him learning to play the electric guitar, practing yoga, and reading Spanish classic literature.

Science | Test Prep | General Studies | Biology | English | Social Studies

Jenna Wiegand

Jenna Wiegand earned her Ph.D. from the University of California, Riverside, in Environmental Sciences before returning to the east coast to work at the Environmental Protection Agency. While at UC Riverside, her research highlighted the impact of specific chemicals on zebrafish development, and thus, the impact on ecosystems and humans. When not presenting at conferences and publishing papers, she mentored undergraduate students through the rigors of higher education and the Ph.D. process.

As someone diagnosed with ADHD in her Junior year of college and who struggled with procrastination, test anxiety, and organization for years, Jenna understands what it is like to be misunderstood by teachers. She has made it a top goal to help students reach their full potential by understanding how they learn and what they wish to accomplish. Her intentional approach and understanding disposition help her to enthusiastically support students through test prep, science, and general studies. She can help even the most defeated student feel a sense of confidence both inside and outside the classroom.

Science | Math | English | SAT | ACT

Joan Reger

We defy you to find a subject Joan can’t teach. Joan is pursuing a PhD in Biology at Georgetown. But she first fell in love with the sciences as a high school student, when great teachers helped her discover the excitement of researching our biological world. She loves tutoring because it helps her pay that forward, and she mentors students with great patience and warmth, gently encouraging them to find their own full potential. A true humanist, Joan is as much at home in the realm of writing and literature as she is in the sciences, and she logged hundreds of hours tutoring high school students in both STEM subjects and English while attending Emory University. She is the ideal tutor for students who want a versatile and confidence-boosting guide and welcome support in multiple subjects.

SAT | ACT | Math | Science | Curriculum Development

Kristen Mastropole

From the Arctic to the Galapagos, Kristen has crossed the oceans as a climate scientist with a passion for biodiversity. She has more than a decade of experience as a tutor, most recently as the director of STEM education at a tutoring center in Hong Kong. Kristen’s breadth of experience with high school students benefits all our students, and she helps design curricula for both standardized tests and general study skills.

And while her research vessels may have taken her to the far corners of the Earth, Kristen always returns to her native DMV, and her students find relevance in her own hometown experiences as a graduate of Georgetown and the Holton-Arms School.

Math | Biology | Physics | Test Prep

Lianna Chung

Lianna is a Georgetown student completing her degree in Computer Science. A transplant from her home state of New Jersey, Lianna brings to the Tungsten Prep team years of tutoring experience with students ranging all the way from elementary school to high school. Along with working with students one-on-one to ensure their success, she also has experience leading online group classes. While she predominately focuses on STEM topics such as middle school and high school math and science, she also supports students through computer science courses and test prep. She is the perfect tutor for any student who is looking for a compassionate, understanding tutor who gently but firmly guides them through the rigors of STEM courses while catering to their needs and interests.

AP History | AP English | AP Psychology | Classical Studies | AP Biology | Reading and Writing

Lindsay Jenkins

Lindsay graduated from Georgetown University, where she majored in Classics and minored in Cognitive Science and Psychology.  As a tutor, she values active listening and deeper connections over superficial interactions and integrates patience, compassion, and empathy into her teaching approach. She specializes in a wide range of subjects for middle and high school students, including reading, writing, English, social studies, history, psychology, government, classical studies, and biology. Her love of tutoring and mentorship has grown since her early formative years, and she has served on the head committee of Georgetown College of Arts and Science’s peer advising program.  

She is an excellent tutor for students who can benefit from gentle, affirmative, and constructive guidance. With her adaptability, positive feedback, and commitment to creating supportive learning environments, she is uniquely suited to help students succeed by tailoring her approach to meet their individual needs. In her spare time, Lindsay enjoys reading, writing poetry, spending time in nature, painting, and playing pick-up soccer.

SAT | ACT | Math | English | Spanish

Mae Butler

A self-described “ambivert,” Mae shifts comfortably between high-energy social interactions and quiet time spent gardening, cooking and embroidering. She brings that same approach to her students and excels at connecting with a wide range of students, from introverts to extroverts and confident test-takers to nervous first-timers. She graduated from Columbia University, where she was a Presidential Global Fellow. Mae began her test prep career in at an NY-based NGO that helps local students prepare for the SAT and ACT. Her students can expect patient and supportive instruction that integrates mentorship and rigorous study. Her goal is for all her students to apply the skills they develop together in future coursework and to have fun while studying!

AP English | AP World History | AP U.S. History | Latin | Greek

Matthew Fredericks

Matthew never achieved his childhood dream of becoming the next Michael Jordan, but he has bicycled across the United States, runs marathons and loves to share his wide-ranging book tastes with his students. An area native, he returned to Washington, DC after recovering from a travel bug that took him to 59 countries. He has taught Math and History for Teach for America in Brooklyn and currently teaches Latin at Bishop McNamara High School in Maryland. Never one to sit still, he is also pursuing graduate studies in Classics at Georgetown University. His motivation to push his body and mind is mirrored in his knack for pushing students to reach outside their comfort zone while ensuring that they come away with greater confidence and an improved understanding of the subject at hand.

English | Reading | Writing | Government | TOEFL | SAT and ACT Verbal

Nancy Wolf

Nancy stands steadfast that learning can, and should, have both a sense of fun and achievement. This long-time native of Maryland carried this sentiment with her through law school, her time at a communications law firm in DC, and now as a tutor working with students of all ages to build confidence and a sense of comfort in learning. Her mental health advocacy background helps create a space for her students to feel heard, appreciated, and understood while navigating coursework and school hardships. She is an excellent tutor for any student looking for support in English, Government, Reading, Writing, English as a Second Language, or college essay support.

Math | Science | IB | Test Prep

Nate Malone

Nate specializes in science, math, and test preparation. With a Bachelor of Science degree in Materials Science and Engineering and Chemistry from Johns Hopkins University, Nate is deeply committed to fostering a love for learning among students from diverse backgrounds. Having lived and studied abroad in South India and Argentina, Nate brings a wealth of cultural insights to his teaching approach, valuing the importance of connecting with individuals from various walks of life.

Nate takes great pride in witnessing his students overcome obstacles and develop essential problem-solving skills, whether it pertains to mastering complex equations or excelling in standardized tests. Furthermore, Nate is dedicated to creating a supportive and conducive learning environment where students feel empowered to address their weaknesses and cultivate academic confidence. In his leisure time, Nate enjoys running outdoors and is currently training for an upcoming 50-mile race.

Chemistry | Biology | Physics, | Math | Social Studies | English | Test Prep

Philip Sumberaz

Philip is an alumnus of American University, where he immersed himself in his passion for Science within their Biology department. He has integrated research and teaching into his academic journey both during and after his time at American. Since earning his degree, he has contributed to mitochondrial DNA research through UC Riverside’s chemistry department and then transitioned into teaching students within the Riverside School District. During his teaching tenure, he prioritized the creation of inviting and nurturing learning environments and dedicated himself to fostering both academic excellence and personal growth in his students.

Philip would serve as an ideal tutor for any student seeking a consistent and calming presence to guide them through the challenges of advanced sciences, math, social studies, and English. When he’s not busy supporting students, you can find Philip fully immersed in the gaming world!

Writing | English Literature | Math | Science | History | Economics

Sofia Romano

Sofia grew up both locally and internationally, settling in places such as the United Arab Emirates, Mexico, Singapore, and various cities throughout the United States. After receiving her bachelor’s degree from Johns Hopkins University in both molecular and cellular biology and sociology, she is beginning her journey into medical school. Her diverse educational and life experiences have afforded her a depth of knowledge that allows her to work with students on a myriad of topics ranging from the humanities to advanced STEM fields. Beyond her years of tutoring experience, Sofia has had the opportunity to work with families in pediatric oncology wards, worked with refugees, and helped neurodivergent students in week-long outdoor courses to open up and connect. Having experience working with both younger and older learners, she is well versed in local school curricula, IB programs, and international studies. Sofia is an excellent and engaging tutor for any student who needs support in multiple areas of study.  

When she is not tutoring, Sofia can be found growing vegetables in her garden or exploring nature through kyaking or backpacking. 

AP English | History | Spanish

Caitlin Jordan

Caitlin is a lover of all things literary. She completed her Master’s in English Literature at Georgetown University. Caitlin has taught Middle School and High School English in Florida and Idaho, where she served as a full-time residential advisor and summer camp counselor. She is currently working as a history teacher for both 7th and 8th-grade students at a private school, but her teaching experience includes high school history as well as English. Her experience living and working with adolescents gives her empathy for her student’s goals and interests and ensures she keeps them laughing. From the passionate reader to the reluctant writer, Caitlin loves meeting her students where they are and helping them find their inner bookworm. Whether they are vexed by grammar, bored by literature, or possibly in throws of understanding the Roman empire, Caitlin loves building her students’ understanding from the ground up.

French | English | Social Studies | Writing

Emily Somberg

Emily was raised halfway between Washington and Paris and serves as a linguistic and cultural interpreter for her students. She helps students get to the bottom of French grammar, History, test prep, and general studies. She has a particular knack for students, and her patient and systematic approach helps those newer to homework refine their test-taking, critical thinking, and time-management skills. Emily has a master’s degree in anthropology from George Washington University. She is the perfect tutor for any middle or high school student looking to explore the depths of school and see how it all connects. She currently works in law and loves to hike and cook when she’s not tutoring.

Math | Spanish | SAT | ACT

Greta Batista

From a middle schooler who “hated” math to president of the George Washington University Association of Women in Math, Greta recognizes that a confidence boost and good study habits can help any student find their inner math enthusiast. This Northern Virginia native has been tutoring students in math, English and Spanish since high school and understands the unique pressures that local students face. A born extrovert, Greta enjoys learning about her students’ interests to motivate them. She is a native Spanish speaker and has degrees in both math and political science from GWU. She enjoys working with students who want help in a broad range of subjects.

Chemistry | Biology | Statistics | Physics | Spanish | ACT Prep

Hunter Hendrix

Hunter is a graduate of Johns Hopkins University, where he studied Biophysics. He is now attending Standford Law School in CA. His STEM background, Spanish proficiency, and law aspirations enable him to tackle a wide variety of subjects and provide an interdisciplinary teaching approach to topics such as science, math, Spanish, and ACT Prep. He brings years of tutoring experience to the Tungsten Prep team from his time supporting college and high school students at Hopkins. Any student looking for a tutor who can help connect the dots between various topics and the world around them would find comfort in working with Hunter! He enjoys whitewater kayaking, true crime, and crocheting when he isn’t working!

Physics | Chemistry | Calculus AB | Spanish | Test Prep

JD Carrizo

Armed with a Bachelor’s degree in materials science and engineering from Johns Hopkins University, JD excels at explaining difficult STEM subjects like physics, chemistry, and calculus to students in a way that they find approachable and easy to understand. As a native Spanish speaker, JD has also worked with students to make language learning a breeze.

When it comes to tutoring, JD pulls from his time in Stockholm, Sweden, where he was inspired by the bright minds of those around him. This experience deepened his passion for STEM and reinforced his commitment to sharing knowledge with others. He believes in the power of connection and is grounded in principles of honesty, patience, and effective communication. JD endeavors to establish a nurturing environment where errors are not only accepted but also embraced as an important part of the learning process.

When JD isn’t tutoring, you can find him learning to play the electric guitar, practing yoga, and reading Spanish classic literature.

Math | History | English | Spanish

Kaitlin Rogers

Kaitlin loves to help students discover the talents they often can’t fully see. She has designed study skills and college readiness programs for first-generation college students in her hometown of Madison, Wisconsin, and taught a course at Furman University that helped students with different social identities engage in conversations to develop empathy and dialogue skills. Her experiences led her to Howard University, where she is pursuing a master’s degree in History. In her spare time, Kaitlin loves cooking, riding her bike and spending time with her friends and partner.

SAT | ACT | Math | English | Spanish

Mae Butler

A self-described “ambivert,” Mae shifts comfortably between high-energy social interactions and quiet time spent gardening, cooking and embroidering. She brings that same approach to her students and excels at connecting with a wide range of students, from introverts to extroverts and confident test-takers to nervous first-timers. She graduated from Columbia University, where she was a Presidential Global Fellow. Mae began her test prep career in at an NY-based NGO that helps local students prepare for the SAT and ACT. Her students can expect patient and supportive instruction that integrates mentorship and rigorous study. Her goal is for all her students to apply the skills they develop together in future coursework and to have fun while studying!

AP English | AP World History | AP U.S. History | Latin | Greek

Matthew Fredericks

Matthew never achieved his childhood dream of becoming the next Michael Jordan, but he has bicycled across the United States, runs marathons and loves to share his wide-ranging book tastes with his students. An area native, he returned to Washington, DC after recovering from a travel bug that took him to 59 countries. He has taught Math and History for Teach for America in Brooklyn and currently teaches Latin at Bishop McNamara High School in Maryland. Never one to sit still, he is also pursuing graduate studies in Classics at Georgetown University. His motivation to push his body and mind is mirrored in his knack for pushing students to reach outside their comfort zone while ensuring that they come away with greater confidence and an improved understanding of the subject at hand.

English | Reading | Writing | Government | TOEFL | SAT and ACT Verbal

Nancy Wolf

Nancy stands steadfast that learning can, and should, have both a sense of fun and achievement. This long-time native of Maryland carried this sentiment with her through law school, her time at a communications law firm in DC, and now as a tutor working with students of all ages to build confidence and a sense of comfort in learning. Her mental health advocacy background helps create a space for her students to feel heard, appreciated, and understood while navigating coursework and school hardships. She is an excellent tutor for any student looking for support in English, Government, Reading, Writing, English as a Second Language, or college essay support.

Calculus | Computer Science | Physics | Economics | Chemistry | Chinese

Ralph Liu

Ralph arrived at Georgetown University with “zero experience” in computer science. Three years later, he became a teaching assistant in the same classes he once struggled in. During his time at Georgetown, he contributed to distributed Graph research and published experiments working in HPC systems at a US National Lab. He now works in Graph analytics as a Systems Engineer at Nvidia.

A nomadic childhood moving between Seoul, Toronto, Boston, Beijing, and Washington, DC, gave him an appreciation for cultural diversity and taught him a cheerful adaptability that helps him connect with a wide range of students in subjects such as STEM, Chinese, and economics. In his spare time, Ralph loves playing badminton, tennis, and guitar.

Writing | English Literature | Math | Science | History | Economics

Sofia Romano

Sofia grew up both locally and internationally, settling in places such as the United Arab Emirates, Mexico, Singapore, and various cities throughout the United States. After receiving her bachelor’s degree from Johns Hopkins University in both molecular and cellular biology and sociology, she is beginning her journey into medical school. Her diverse educational and life experiences have afforded her a depth of knowledge that allows her to work with students on a myriad of topics ranging from the humanities to advanced STEM fields. Beyond her years of tutoring experience, Sofia has had the opportunity to work with families in pediatric oncology wards, worked with refugees, and helped neurodivergent students in week-long outdoor courses to open up and connect. Having experience working with both younger and older learners, she is well versed in local school curricula, IB programs, and international studies. Sofia is an excellent and engaging tutor for any student who needs support in multiple areas of study.  

When she is not tutoring, Sofia can be found growing vegetables in her garden or exploring nature through kyaking or backpacking. 

Spanish | Computer Science | Social Studies | Math

Victor Ke

Victor is currently attending Johns Hopkins University, where he is a student researcher pursuing his master’s degree in health communication and education. This self-described ambivert hails from Southern California and embodies adaptability and an understanding disposition, which are crucial qualities for any tutor. Victor firmly believes that establishing meaningful connections and effective communication enhance every tutoring session, fostering a positive learning environment for his students. He recognizes the importance of tailoring his teaching methods to the unique needs of each student, adopting a personalized approach that ensures maximum engagement and comprehension. His experience with the International Rescue Committee has provided him with opportunities to connect with and build relationships with newly settled refugees as they navigate their lives.

Victor’s extensive range of subjects, including math, history, English, Spanish, and computer science, makes him an excellent tutor for students seeking in-depth exploration of various topics or general academic support. As a native Spanish speaker, he is particularly adept at assisting students with the intricate concepts encountered in advanced Spanish classes. When Victor is not tutoring, you can find him supporting his favorite team, Arsenal, or engaging in outdoor activities. His kind and personable demeanor make him the perfect tutor even for the most reluctant of students.

Arabic

Zahraa Alnajaar

Zahraa makes learning Arabic a cultural adventure. She believes students learn best when they understand not just the subjects and verbs, but the art, music, geography and history that enriches and informs the language. A veteran teacher with 16 years’ experience, Zahraa is on the cutting edge of using technology and online learning resources to enhance her students’ understanding and enthusiasm for Arabic.

Zahraa is a lecturer in Arabic at American University and teaches classes at both the Middle East Institute and Johns Hopkins’ School of Advanced International Studies. She has a PhD in literature from Aleppo University.