Yeah, that's about normal. Usually the excuse when they hurt innocent kids was "well, they aren't angels, and he was right to suspect them". Which was always used against poor kids.

The SRO was black, but that didn't stop him from being racist either. But he dished it out to basically any of the latchkey kids who were caught with joints at any point during highschool or middle school.

All the SROs for elementary through highschool knew each other, so they'd pass on "trouble kid" lists and those lists became self fulfilling prophecies for the most part.