We’re a group of SAT Subject Test experts dedicated to helping you ace your SAT Subject Test(s) of choice.

The Best Online SAT Subject Test Instructors

Allen Cheng
Perfect Scorer, Harvard

Allen scored a perfect 800 on the SAT Biology (Molecular), Chemistry, Physics, and Math 2 Subject Tests. He graduated summa cum laude from Harvard University, where he earned multiple teaching awards.

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Diana Patton
Perfect Scorer, Swarthmore

Diana scored a perfect 800 on the SAT Literature Subject Test. She holds a dual degree in Mathematics Education and English, as well as a secondary teaching certification, from Swarthmore College, and has over 10 years of teaching experience.

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Alex Heimbach
Perfect Scorer, UChicago

Alex scored a perfect 800 on the SAT Subject Test in World History. She graduated with honors from UChicago with a BA in English and Anthropology, went on to earn a MA at NYU in Cultural Reporting and Criticism, and is now working with PrepScholar as an expert test prep writer.

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Laura Staffaroni
99%ile Scorer, Wellesley

Laura earned a 99%ile score on SAT Biology (Ecological) Subject Test and has helped to develop PrepScholar's SAT Subject Test programs. She graduated magna cum laude from Wellesley College with a BA in Music and Psychology and went on to earn a MM in Composition from the Longy School of Music of Bard College.

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Learn from the Masters

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

SAT Subject Test Instructor at Blackboard

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 Subject Test changes and trends. When you prep with PrepScholar, what you learn is updated for the test you’re going to take.

Our Founders

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

Allen Cheng got perfect scores on the SAT, numerous SAT Subject Tests, and the 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.

Fred Zhang got a perfect score on the SAT and SAT Math 2 and Chemistry Subject Tests 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.

I’m glad I have something that won’t waste my time with what I do know, and pinpoint what I don’t know. You guys are SAT experts.
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Jessica N.
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