I'd be interested to see how many shooting there were per academic hours throughout all of the University's in the United States over the past year. Surely a lot less, than many of other spots that everyone, not just students frequent in their day to day lives.....
If the problem is so bad, and guns need to be on campus, then it should be via additional police, or security teams. With all due respect, getting a Concealed to carry permit isn't hard. Complete a couple hours of training, and go to your police station. Speaking of training....Having training on how to operate and fire a weapon is NOT the same as having training on how to operate and fire a weapon while taking fire.
So again, if it's such a problem, then hire security. Hell, I would support the University training and employing students to patrol the campus, during hours when not in class, but this is a serious business, and I hardly think going from the role of a student into clark kent in half a second is practical, or safe.