So we have:
"Families say coach came looking for alleged victims night before assaults"
and they also say
"You was at our house. You could have talked to us about the situation."
It sounds like that's what he tried to do and when no good came of it, the next day he took the issue back to the students and things got out of hand.
"I wanted to go jump on the coach and punch him upside the head."
These "kids" learned by example.