How about referring the troublemaker for arrest on the basis of a worsening history of incidents that include an assault committed a year ago?
I don’t know the full extent of their tool set, but I do know they have the power to strongly engage Law enforcement when they encounter students who demonstrate themselves to be a danger. They can’t be excused for not.
The cops visited his home nearly 40 times yet they never bothered to arrest him yet you blame the school board.