This is just how the Nazis worked when they infiltrated the national schools in the thirties.
If children went home and told the parents what was being taught, they were punished and the families were ostracised.
There are good examples of this given in Maria Von Trapp’s autobiographical books. (the Trapp Family Singers)
Right now our school board has been prosecuting a parent & has spent $30,000 of taxpayer money doing so.