Not really, law abiding people can't have guns on (most) school campuses.
You think robbers would take the chance of robbing someone that may have a gun and shoot back?
True. That was one of the hardest things that I had to do to go to college - lock up my guns at a friend's house on the other side of the state. I hate not having a gun handy. I do, however, keep my ice-axe sharp. Best that I can do.