When I was in school (74-78) the campus opened a secure bike parking facility that always had a guard who would check in your bike and give you a tag to reclaim it with later in the day. That was for daytime bike parking on campus. This was Cambridge, MA so bike theft was a serious problem. Not sure how the dorms worked, since I never lived in one. I lived in a 30-person co-ed fraternity with lots of bike nuts, so bikes were kept inside the house and the "Pit Bike Shop" was open on request.