It's not really surprising this case went the way it did. So often school bullies get nowhere academically, they don't end up working in laboratories for big pharma X or or in an engineering position at metal fabricator Y. No, the bully personality typically ends up in police enforcement or administrative positions in schools, where they can hold onto a small shred of power over people.
I'm really not surprised that these bullies defended the aggressors here and turned the victim into the criminal.
The officer and school administrators should be treated with zero tolerance for what happened here.