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.




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 tutoring the SAT, ACT, ISEE/SSAT, creative and argumentative writing, and higher level math. He also works with students who have different learning styles and executive function struggles. In his spare time, he enjoys running marathons, reading fiction, and exploring NYC’s live music scene.

Subjects Tutored: SAT, ACT, SAT II (Math I and II, Literature), ISEE/SSAT, High School Math (up to and including Calculus), English, Executive Function



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

Ying Saks


Ying Saks has a J.D. from Yale Law School, where she was an articles editor for the Yale Human Rights and Development Law Journal, as well as the Yale Journal of International Law. Ying has been tutoring since she was a high school sophomore. As an undergraduate at McMaster University in Ontario, Ying was a teaching assistant for freshman calculus and freshman literature, as well as an LSAT instructor with Kaplan. She also worked as a writing clinic tutor. Ying has experience working one-on-one with students of all ages and abilities. In her spare time, Ying is making a documentary about grammar.

Subjects tutored: New SAT, ACT, SAT II Literature, Math, English, General Homework Help (Middle School and High School)

Jon Agins


Jon is an advanced PhD candidate studying German Literature and Critical Thought at Northwestern University, completing his dissertation in New York City. During his time studying at Northwestern, he taught a variety of classes, including philosophy, literature, history and German language courses. As an instructor at Northwestern, he often worked with his students to improve their writing, critical reading and research skills. Jonathan 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. After living in Chicago for six years, he is happy to be returning to New York City – where he was born and raised. When not teaching or writing his dissertation, Jonathan enjoys taking long walks, reading, and traveling.

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

Hannah Tredway

science and math

Hannah is a fourth year medical student at NYU School of Medicine. She graduated from the University of Utah with a degree in Biomedical Engineering. While in college, Hannah was an MCAT tutor for aspiring medical students. Since starting medical school, she has volunteered at the NYC Free Clinic, taught science classes to middle school and high school students, and designed and oversaw a week-long intensive camp for high school students to expose them to the field of cardiology. Her current research involves creating virtual 3D models of congenital heart disease for use in pre-procedural planning. In her free time, she enjoys wandering around New York City, traveling, reading, and building cabinets.

Subjects Tutored: SAT, ACT, SAT II (Biology, Chemistry), Math, Biology, General Homework Help

Tomas Frymann

math, science, and humanities

Tomas is a PhD candidate studying Psychology and Spirituality at Columbia University, with a research focus at the intersection of neuroscience and self-transcendence.  He graduated from UCLA with a double major and highest honors in Psychobiology and Marine Biology.  While in college Tomas tutored high school students in SAT, math, chemistry, biology, English, and Spanish.  He also tutored university students in psychology topics including Social Psychology, Sensation and Perception, and The Psychology of Learning.  After college Tomas solo travelled the world for two years and spent many hours in meditation and contemplation.  In his free time Tomas enjoys surfing, rock climbing, playing basketball, and finding adventures.

Subjects Tutored:  SAT, ACT, Psychology, Math, Chemistry, English, Spanish, Homework Help (Middle School and High School)

Marleigh Stern

science and math

Marleigh is a fourth year medical student at NYU School of Medicine.  She graduated from Washington University in St. Louis with a degree in Philosophy-Neuroscience-Psychology and Dance.  While in college, she taught neurology to high school classes through a volunteer program, and she served as co-president to a women’s health and wellness honorary.  In medical school, Marleigh volunteers at the NYC Free Clinic and is also a clinic coordinator, and she teaches basic medical concepts to high school students through the Mini-Meds program.  She is currently spending a year doing clinical research in dermatology.  Marleigh spends her time outside of work dancing, hiking, and traveling.

Subjects Tutored: Biology, Chemistry, SAT II (Biology and Chemistry), Middle and High School Math, General Homework Help (Middle School and High School)

Quintin Rizek

math and science

Quintin is recent graduate of Brown University, where he received a B.S. in Neuroscience. At Brown, Quintin played Division 1 Varsity Football and tutored his fellow student-athletes in a wide variety of subjects including Neuroscience, Calculus, Biology, and Computer Science. Quintin received multiple awards on and off the field, and was a member of the Ivy League Honor Roll. He is currently conducting neuroscience research at Weill Cornell Medical College. Quintin has worked as a mentor in an elementary school special education classroom, and volunteered for the American Red Cross and Autism Speaks organizations. In his free time, Quintin likes to read, exercise, and spend time with friends.

Subjects Tutored: Math, Science, General Homework Help (Middle School and High School), Mock Test Proctoring


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


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 eighth year of college essay counseling; she works with incoming seniors on the oftentimes rigorous college essay process by customizing her support for each client. She is an avid reader, especially of Science Fiction, and enjoys cooking and traveling.

Subjects Tutored: College Essays, Applications, and Supplemental Essays