We’re a group of SAT experts dedicated to helping you ace the SAT.

The Best Online SAT Instructors

Stephanie Hurder
Perfect Scorer, Harvard

Stephanie graduated from Harvard with both an AB in Mathematics and a PhD in Business Economics. Stephanie has received multiple awards for her teaching and research at Harvard.

Margaret Kilcoyne
99%ile Scorer, Northwestern

As an SAT tutor with hundreds of hours of teaching experience, Margaret has led SAT score gains of hundreds of points in many students. With a Master’s in Education, she’s taught in the Chicago public school system.

Joy Hui
Perfect Scorer, Harvard

Joy earned a full 36 score on the ACT and a 99%ile score on the SAT. She currently constructs prep curricula for dozens of students in the Boston area.

Ellen McCammon
99%ile Scorer, Harvard

Ellen scored a 2350 on the SAT and a 35 on the ACT. She graduated from Harvard and is now working with PrepScholar as an expert instructor..

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Learn from the Masters

Our teaching materials were crafted by a team of experts who mastered the SAT themselves when they were students. Every skill and strategy you learn with PrepScholar will actually work on the SAT — they worked for us.

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Experienced at Teaching

We’re not just good at taking tests. PrepScholar employs award winning teachers with extensive classroom and tutoring experience. We’ve made sure that our lessons, honed through thousands of hours of real teaching, teach as effectively as possible.

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Constantly Updated

We’re obsessive about our teaching quality. We constantly create new lessons, take in student feedback, and research SAT changes and trends. When you prep with PrepScholar, what you learn is updated for the test you’re going to take.

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Our Founders

We were fed up with expensive SAT prep classes and mediocre teaching. We figured out how to master the SAT, and we created PrepScholar to share our strategies with you.

Allen Cheng got perfect scores on both the SAT and ACT and leads product design and teaching at PrepScholar. From his own teaching and educational career, Allen noticed how most education, especially test prep, is too one-size-fits-all to be effective. He co-founded PrepScholar to bring you the same approach that’s worked for him — find your weak points and master them with focused practice. Allen loves product design and is passionate about creating the best user experience for PrepScholar users. Allen graduated summa cum laude from Harvard University, where he earned multiple teaching awards.

Fred Zhang got a perfect score on the SAT and scored in the 99th percentile on the ACT, and leads customer outreach and marketing at PrepScholar. Fred mastered the tests by dissecting the test, focusing on his weak spots, and consuming every training material he could find. Fred is passionate about connecting with the PrepScholar user community and using your feedback to improve our product constantly. He also designed the advanced algorithms that pinpoint your weaknesses and tailor your educational program for you. Fred graduated from Harvard University with a Bachelor’s in Mathematics and PhD in Economics.

My son is a sophomore and scored in the 99th percentile on his test. I like that PrepScholar was able to pick that out and give hard lessons to him that was right for his skill.
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