5.0Exceptional(18 reviews)
Offers online services
Offers online services


My company, 800score (a free site similar to Khan Academy), has helped millions of students prepare for the SAT, GMAT, GRE, and LSAT. My GMAT and GRE simulation software has been licensed to test prep companies and universities, worldwide.

I studied neurobiology at Cornell and English at Oxford. I scored a 99.98 percentile, cumulative, on the SAT, and 99th percentiles on the GMAT, GRE, and LSAT. The median SAT score of my 250+ in-person students is 1480. I offer a 270 point score increase/or over 1450 guarantee.

I've been to ETS and GMAC headquarters (where the SAT/GRE and GMAT are designed, respectively) and have consulted with their psychometricians. Kaplan wanted to hire me for their R&D department, and McGraw Hill offered me a publishing deal.

The SAT is used by admissions officers because it strongly correlates with undergraduate GPA. Ramping up college readiness will “ping” the SAT’s sophisticated psychometrics, resulting in a higher score with the added benefit of improved college performance. SAT prep should help you get into your ideal school and succeed once there.


8 employees
24 years in business
Serves New York , NY
Offers online services

Payment methods

Cash, Paypal, Bitcoin




Test sections

Math, Reading, Writing and language, Science, Essay


0 reviews

lena A.

Sean does a great job of simplifying content (Feynman method) and teaching students “how to teach themselves how to think.” Just completely remarkable and life changing. My son’s score shot up 330 points and his confidence is night and day. The whole SAT experience turned into a positive one.
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September 29, 2023

priyanka V.

I highly recommend Sean as a SAT tutor for anyone wanting to get the highest score. He is a ridiculously talented tutor and is always prepared for our sessions. He completely understands the exam and always provides useful advice that was very helpful in my preparations. On top of that, he also has great teaching methods which helped me grasp concepts effectively and efficiently!
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August 29, 2023

amy H.

Thank you for your “pet policy”, “pet theory”, “galaxy brain”, “robot lawyer”, taoisim and all your other brilliant insights that helped me kill the SAT.
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August 27, 2023

ashley Y.

I loved all the ways you made things easy and simplified. Thank you for teaching me performance strategies. I promise to keep better sleep schedules and manage my circadian rythyms!
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August 26, 2023

anusha B.

Sean is the best teacher I’ve ever had. I wanted to go up from my prior score of 1520 and he raised it to a 1570.
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August 23, 2023

pooja P.

I had the pleasure of working with Sean as my SAT tutor. He was patient, knowledgeable, and always willing to go the extra mile to help me understand difficult concepts. His teaching style is engaging and he has a knack for breaking down complex topics into easy-to-understand chunks. I highly recommend him as an SAT tutor - hes the best!
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August 21, 2023

Services offered

Reading And Writing Tutoring
Test Prep Tutoring