I went to SDSU in the 70s, and we too had our own “police department.” Of course, they weren’t armed (it was California), and when we had a brutal rape and murder in the dorm next door, they immediately called in the “real” police.
You can hardly equate campus police with an actual municipal police department.
Mrs. Prince of Space
Penn State is different.
From their web site:
The Penn State University Police provides all law enforcement and security services to the University Park campus. We employ:
•46 full-time armed officers
•Six traffic and parking officers
•Five police dispatcher/recorders
•Approximately 200 students as auxiliary officers and escorts
The department provides 24-hour patrol services to the campus and University-owned properties year round. The University Police is governed by a state statute that gives our officers the same authority as municipal police officers.
Bolds mine. PSU police have jurisdiction over crimes on campus.