While it's pretty self-evident that "gun-free zones" offer zero protection from mass murderers, I can understand the public's concern for college students access to firearms. Dorms are far from a secure place for storage, and the weekly parties that often involve alcohol increase the risk of a gun related accident.
I support allowing concealed carry on campus, but I also support a zero-tolerance policy for any infraction. Carry it, but if it's exposed, misused, left unsecured, etc, it (and maybe the student) is removed from the campus. We don't need "accidents" or immature people with guns in that environment. It just hurts the rest of us.