It's always been amazing to me how much power we parents have and how little we understand about it.
Call the police department and ask them about programs for public schools. I was able to get a sheriffs deputy to contact the Superintendent of schools who in turn contacted the school principal.
That got them moving on starting a program before that crazy mother, Me, started a lawsuit. Doesn't matter whether you do anything or not but if they get the idea that they are gonna have to call their expensive lawyer, they'll get off their butts fast.
You just be your charming, intelligent, involved parent, who needs their help in solving a problem. You've seen all that stuff on the television about bullies. You've heard about that face book stuff. You are worried.
You know how this goes. Document everything.