Fancy Mathematics Final

What is it about us bronies that makes us like to extrapolate throwaway lines and cuts? Here is Big Macintosh about to turn in his final exam in Fancy Mathematics class. After AJ mentioned it in Applebuck Season, I've always liked the idea that Big Mac has a B.S. in Math, or whatever the Equestrian equivalent would be. Naturally then he would've had to take classes.

This is my most ambitious drawing to date. Multiple ponies! Perspective! A background! I realized after inking everything that I really messed up the perspective on the desks, so I just gave up on adding a background.

I drew this with an ordinary mechanical pencil and bic pen, then took a picture with my camera phone. I still need to get a scanner some day...