During the time I was in school they had a rash of muggings and rapes on the campus. They handed out whistles to students and told them not to travel alone while on campus. We even had police officers taking classes and they couldn't (legally) bring weapons on campus.
When our daughter was in college she worked at night near the front door of a women's dorm.
Among her instructions were:
"If you see a student who has been raped or assaulted, DO NOT call the local police, call campus security."
Many colleges and universities don't want little things like rapes or assaults reported to police, it would hurt their image.