Local police (armed, in normal uniform) hired by school districts to stay on-site and patrol the halls, break up fights, arrest bad kids if necessary. They are

Local police (armed, in normal uniform) hired by school districts to stay on-site and patrol the halls, break up fights, arrest bad kids if necessary. They are pretty typical for inner-city middle and high schools where gang violence is common. I remember having them in both my middle school and high school.