Why not build atop something like https://github.com/ASKBOT for this?
Re:YC W15 emails are out
by niravprajapati on Wednesday October 29, 2014 @07:03AM
(#8526507)
my version is more student/teacher friendly with improved editor for Q/A posting, whiteboard, responsiveness etc.
http://test.studyboard.com/studyboard/app/#/questions