My concern is putting placing guns on campus with the carrier as the only safeguard for each gun. Disaster would be inevitable. Furthermore, I don't think the guns would be a deterrent for these shooters. The vast majority don't seem to care if they survive the incident, even committing suicide once they're done. As for the argument that guns would decrease the length of the shooting spree, I don't think the vast majority of carriers are skilled enough to do this.