If he escalates with a knife or a bat, that's no longer bullying, that's assault with a weapon. Although you could say bullying is assault, nobody is going to

If he escalates with a knife or a bat, that's no longer bullying, that's assault with a weapon. Although you could say bullying is assault, nobody is going to send the kid to juvenile for punching you. But they will sure as hell will send a kid with a knife to another place to protect the other kids.