Large portions of globe functions with fights at school that don't escalate to death or injury with a weapon.
We had fights, they could be brutal, the social mechanics allowed a needle to be threaded which myself and a number of others largely managed to do; stand your ground, don't engage physically, don't run .. if someone calls you out and starts smack talking, don't rise, just reply and confound. If they take a swing dodge it and don't respond, if it lands, suck it up and don't respond - in the rung climbing of high school and elsewhere this makes the other look a fool.
There were lessons learned from that and I can still my grandchildren benefitting from phyical encounters (not just fights, engagement with big waves, steep hills, solid animals, bicycles and motorbikes) that can hurt but largely don't kill them.
You forgot school shooters exist.