Meet the 30 Under 30, Class of 2013

Courtesy Company
25 of 31

Course Hero

Students at 4,500 schools use Course Hero to access other college students’ notes, study guides, class notes, past course exams, flash cards, live tutoring services, and supplementary courses. Andrew Grauer, who founded the company with his twin brother, David, and Gregor Carrigan, came up with the idea as a sophomore at Cornell University, when he was laid up with a knee injury and had trouble getting to class. The site now hosts more than 7 million documents and is on track for $10 million in revenue this year.

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