I think that figure likely includes all contributions, not just questions. I took this same class in Summer 2015, and there are 1036 posts[0] and 11074 contributions[1] on the online forum for that class. The number of students is similar (370 in my class, 302 last semester).<p>[0] posts are questions and notes<p>[1] contributions are posts, responses, edits, followups, and comments to followups (i.e., everything)