Don't know what's changed but going back a ways I only remember BU Harvard and MIT only having somewhat legit police. Even then I recall BPD ragging on the BU police.
Maybe that's just in Boston, because back in the 70s, WPI had armed campus cops.
Then again, we also had a pistol range in the basement of the gym, which handed you a pistol and a tray of .22LR ammo if you showed a school ID and gave them a few bucks. And an open pool nuclear reactor in the mechanical engineering building. Good times.