CourseRank, which Chegg acquired last summer, lets students see reviews of courses and professors written by other students. "Students can also see when a class meets so they can plan their
schedule online," Bits explains. "They can also see who among their friends have signed up for a given course, the distribution of grades (is this class going to be hard or not?) and of course, what
textbooks are required." To date, Chegg has raised over $200 million in debt and equity.