My high school (Johnson County, KS; aka, affluent) had two LEO's eployed by the school district's PD and one from the City PD. The City PD guy had a take-hone he parked out front. The others drove their POV's. They were assigned to that high school only. Every high school I went to had at least two or three full-sworn LEO's. They carried their equipment, too. My middle school in the 90's had a dedicated City PD Officer, but one was not enough to even put a damper on what went on there.