> For it to be saleable to departments I bet most assignments are already in the system and you just check off which one to issue. Yeah, think of Khan Academy

> For it to be saleable to departments I bet most assignments are already in the system and you just check off which one to issue. Yeah, think of Khan Academy but paid. The pricing I've seen so far in my classes (1 math textbook, 1 history textbook) is 100ish per semester for each textbook's accompanying service, 180ish for a yearly pass (eg. if you take 2+ math classes in consecutive semesters).