Not just the mindset, it’s policies and enforced rules. Kid punches teacher = temporary consequences. Teacher safely restrains or even touches the wrong violent kid = career over.

Requiring a hands-off approach protects the district from paying out workman’s comp claims for staff injuries and protects from lawsuits when a kid with involved parents is handled roughly. Besides, shit kids are plentiful while licensed educators are scarce. Best not take unnecessary risks and leave 180 students suddenly without a science teacher, over a fight that would have ended one way or another. That’s the thinking.