Stephen Johnson is the Founder of AptivPrep, a high-performance SAT prep system that pairs adaptive AI with expert-led instruction and score guarantees.

A former genetics researcher and double Bruin (UCLA B.S. 2005, UCLA Anderson MBA 2021), he began as a private tutor and founded Bright Minds Tutoring after college. He grew up in inner-city Los Angeles, where his family experienced periods of homelessness, which shaped his belief in education as a path to stability.

Stephen is the creator of The SAT Math Guy YouTube channel and author of Small Beginnings Require Bigger Dreams. He was a 2020 John Wooden Global Leadership Fellow and served as president of Anderson Black Alumni.

He founded Ymeon Capital, through which he angel invests in and advises startups across Edtech, Legaltech, Spacetech and Femtech. He also serves as Vice President at TCF Family Legacy Foundation, is a Strategic Alliance Partner at BCREM Inc., and teaches entrepreneurship, finance and calculus at Canterbury School.

AptivPrep serves students aiming for top colleges with adaptive daily practice, real-time feedback and score guarantees on its Elite and Accelerator programs. His mission is to democratize elite test prep so that better scores lead to more open doors.