I had a friend of mine who was suspended for getting in a fight on a bus on the way to school. Thing is, the guy pushed him over and my friend never laid a finger on him. The principle even acknowledged that but say zero-tolerance tied his hands.
Zero Tolerance = Zero common sense (IMHO as a public school employee).
So what the rules are saying is that if you let yourself get pushed around, you get the same punishment as kicking the other guys butt.
I’m not sure this was the intent of zero tolerance.