Jason was recommended to us by a dear friend. We were looking for an tutor for our 12 year old son applying to private schools. Jason, and his colleague Tom, met with him, two or three times a week, for 4 months. They were able to see what his strengths were immediately and therefore able to concentrate on the things that needed work in a short amount of time. Jason and Tom were focused, thoughtful and so supportive throughout the whole process. Together they worked hard and our son’s scores improved greatly. We have three young children who have many more academic hurdles to pass and we will definitely work with Jason and Tom again. We recommend them highly.



founder and director

Jason is the founder and director of the Winter Learning Group. He graduated from the University of Michigan in 2009 with a dual degree in History and Political Science. He has been tutoring full-time in New York City since then, and has extensive experience preparing students for the SAT and ACT tests, consulting on college essays and applications, and helping students and families navigate the college process. He also works closely with students who have different learning styles or struggle with executive function. In his spare time, he enjoys hiking, traveling, reading fiction, and trying new restaurants.

Subjects Tutored: SAT, ACT, SAT Math and Literature Subject Tests, Executive Function, College Application Essays



Tom is an advanced PhD candidate studying Russian and Soviet History at Harvard University, completing his dissertation in New York City. He has taught numerous undergraduate courses while at Harvard, winning teaching awards each semester. He is also currently serving as the lead Departmental Teaching Fellow in Harvard’s History Department. He has experience tutoring SATs, New York Regents exams, AP exams, and high school math. Tom graduated from the University of Michigan with a BA in History and is an avid golfer and a passionate college football fan.

Subjects Tutored: SAT, ACT, SAT II (US History, World History, Physics, Math I and II), ISEE/SSAT, High School History, English, Math (up to and including Calculus), and Physics

Jon Agins

test prep and humanities

Jon has a PhD in German Literature and Critical Thought from Northwestern University, where he completed his dissertation on Robert Musil’s The Man Without Qualities. He graduated from Stanford University in 2009 with a BA in German Studies and a minor in Philosophy, after attending the Saint Ann’s School in Brooklyn. At Northwestern, he taught a variety of undergraduate classes, including philosophy, literature, history, and German language courses. He has been working as a tutor in New York for the past three years, focusing on both standardized tests and schoolwork with middle and high school students. He has experience tutoring the ACT, SAT, ISEE, SSAT, and SHSAT as well as a broad range of academic subjects—including English, History, Math, Science, and Spanish. In his free time, Jon enjoys exploring the city, spending time with friends, reading, and traveling.

Subjects Tutored: ISEE, SSAT, ACT, SAT, SHSAT, English, History, Math, Spanish, General Homework Help

Megan O'Donnell

science and math

Megan has a B.S. in Biology from Providence College and a Masters in Secondary Science Education from NYU. She currently teaches high school Earth Science and Living Environment, and has several years tutoring experience in Biology, Chemistry, Earth Science, Math, SAT, and SHSAT Prep, previously at Kaplan. As a high school Science teacher, Megan is used to working with all types of students with various learning styles and difficulties.

Subjects Tutored: Biology, Chemistry, SAT Subject Tests (Biology and Chemistry), Math, SAT, ACT, ISEE/SSAT, General Homework Help

David Berger

test prep and math

David has a B.S. in Mathematics from Villanova University, which he attended on full academic scholarship. There he was invited to participate in the Interdisciplinary Scholars Program in Humanities at the Honors College. He was able to test out of Science, having received perfect scores in AP Physics C and AP Chem. In his freshman year, he started to work as a private tutor. He has full-time teaching experience in HS Math and Computer Science. In addition to tutoring, David does consulting work and coding for the web, as well as data and statistical analysis. He is highly passionate about vocal music, having been president of a men’s choir, musical director for an acapella group, and founder and director of an auditioned choir.

Subjects tutored: SAT, ACT, Math, Physics, Computer Programming

Adrian Fadil

test prep and humanities

Adrian graduated with honors from Davidson College in English Literature. Since then, he has spent extensive time working as a journalist in the Middle East and tutoring students of all ages in SAT (I and II) critical reading, writing, and ESL skills. Additionally, he has worked closely with students to help them process and edit their college essays, and co-taught an undergraduate writing course at Fordham University.  Adrian speaks four languages and holds a certificate in business from Harvard Business School. He recently led a reforestation pilot project in the West Bank that involved the collaboration of NGOs, governmental agencies, and an international start-up.  He is currently completing a historical novel based in the Middle East as he considers returning to school for physics. 

Subjects Tutored: English, History, Physics, ACT, College Essays

Madeleine Elfenbein

test prep and humanities

A native New Yorker, Madeleine attended Horace Mann and earned her BA in Social Studies with a certificate in French from Harvard University. She received her Ph.D. in 2017 from the Department of Near Eastern Languages and Civilizations at the University of Chicago, where she taught undergraduate courses in Middle Eastern history, Islamic and European political thought, and academic and professional writing. After a two-year research fellowship in Germany, Madeleine is happy to be back in her hometown, where she is finishing up a book about political thought in the Ottoman Empire in the nineteenth century. Alongside teaching and research, Madeleine enjoys soccer, foreign languages, and marveling at triangles and their many properties. She is happy to work with students on test preparation and developing their writing skills.

Subjects tutored: SAT ACT, GRE, SAT Subject Tests (French, U.S. and World History), General Writing Skills.

Katja Lazar


Katja is a recent graduate of the Columbia pre-medical post-baccalaureate program, and is currently applying to medical school. This year, she will be serving at a school in Harlem through FoodCorps, an AmeriCorps program, teaching nutrition and healthy eating habits. After graduating from Columbia University in 2015 with a BA in sustainable development, she taught kindergarten math for the research division of Bank Street. Outside of work, she enjoys rock climbing and exploring ramen restaurants in New York City.

Subjects Tutored: Biology, Chemistry, Physics, SAT II Subject Tests

Minwei Cao

test prep and biology

Minwei is a first year MBA student at Cornell University. She graduated from Williams College with a double major in Biology and English. She has extensive experience tutoring middle, high school, and college students in a variety of liberal arts subjects including Essay Writing, Math, Biology, Chinese, and Test Prep. Her passion for teaching came from her family, who are mostly educators. For the past few years in New York, she worked as a consultant for consumer products while teaching group and private Chinese classes part time with a professional language school. One of her favorite things about being a part-time teacher is meeting new students and helping them reach their personal goals. She believes successful learning is a partnership between the tutor and the student, not a one-way street. She learns as much from her students as they learn from her! During her free time, she enjoys making floral arrangements, being a barista, and reading everything from YA fiction to Classical Chinese literature.

Subjects Tutored: Test Prep (SAT, ACT, GRE), Chinese, Math, Essay Writing, Reading, Biology

Christina Gilligan


Christina Gilligan is a PhD student in English Literature at Brown University, where she specializes in the Victorian novel. As a graduate student, Christina teaches both composition and literature courses for undergraduates. Prior to beginning her PhD, Christina worked as a lawyer in New York City. Christina graduated with honors from Harvard Law School in 2014 and received her B.S. in Business Economics and her B.A. in English Literature from Indiana University in 2011. In her free time, she enjoys running, trying new restaurants, and reading non-Victorian novels.

Subjects Tutored: LSAT, GRE 

Andy Suzuki

test prep

Andy Suzuki graduated from Sidwell Friends School in DC before getting his BA in Economics from Brown University in 2009. Since moving to NYC shortly thereafter, Andy has been dedicating his life to his two passions: music and tutoring. His band has opened for Ringo Starr in front of tens of thousands of people, he has toured Asia, and he has given a TED Talk at the CIA headquarters. Andy brings this same level of excellence and passion to his teaching endeavors. Specializing in the ACT and SAT, he has been tutoring in NYC for nearly a decade. He has experience with all kinds of students: top scorers who have their eyes on the Ivy League and low to mid range scorers who are looking to maximize their returns as quickly as possible. Andy also has extensive experience working with students with special learning needs.

Subjects Tutored: SAT, ACT

Emily Simon

test prep and humanities

Emily Simon is a PhD candidate in English at Brown University, where she studies contemporary American and Canadian poetry and theory. Throughout her time in the program, she has taught high schoolers through Brown’s summer program and has designed and taught both composition and literature elective courses for undergraduates. After graduating from Boston College with a B.A. in English and a minor in philosophy, Emily worked for an academic publishing company in Boston. With a strong background in reading and writing, she looks forward to helping students find their voice in the classroom and to approach their schoolwork feeling comfortable and confident. Outside of work, she enjoys cooking, practicing yoga, attending poetry readings, and visiting art museums.

Subjects Tutored: English, History, ACT, General Homework Help

Andrew Lin

science and math

Andrew is a fourth-year medical student at NYU School of Medicine. He graduated from the University of Pennsylvania with a degree in biology. While in college, he taught students in physics, biology, chemistry, and organic chemistry. Since starting medical school, he has tutored middle and high school students in the sciences and has advised numerous medical school and college applicants. He is currently pursuing a master’s in biomedical informatics, with hopes to combine machine learning with his interest in ophthalmology. From his tutoring and mentoring experiences, he understands that students learn in a variety of ways. In fact, his students have taught him over they years that there are limitless ways to flourish and succeed academically. It is this foundation that serves as the basis of his approach when helping students. In his free time, he enjoys calligraphy, drawing, and kitesurfing.

Subjects Tutored: Biology, Chemistry, Physics, Mathematics, SAT II Subject Tests

Alexandra Rubinstein

college essay prep

Alexandra graduated from the University of Michigan with a BA in English Literature. She received a Master of Science of Education at Fordham University and a Master in School and Building Educational Leadership at Hunter College. She is in her tenth year of teaching; she has taught AP English Literature, Grade 11 American Literature, Wilson Reading, Advanced Research Composition, and courses on career and college success. Alexandra is also in her tenth year of college essay counseling; she works with incoming seniors on the oftentimes rigorous college essay process by customizing her support for each student. She is an avid reader, especially of Science Fiction, and enjoys cooking and traveling.

Subjects Tutored: College Essays, Applications, and Supplemental Essays