When does you school board meet, whether it's a public school or private you might consider attending and letting your concerns be known.
Decide what you want done about the situation and let them know.
Some places have news reporters that cover this type of thing if you're not getting results from your other efforts.
The desert is a true treasure for him who seeks refuge from men and the evil of men. In it is contentment In it is death and all you seek (Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)
