My brother is a high school teacher (who home schools his own kids) He teaches engineering technical classes. He had a scheduled field trip cancelled at the last minute because he did not fill out a form that nobody knew he needed to complete. The Principal is a total lunatic who is unemployable in any context.
They tried to build a case to fire my brother last year based on incompetence. I met some of his students last year. All I said was “I’m Mr. Cyclotic’s brother.” and the students all began to say with great enthusiasm what a great teacher he is and how they go out of their way to take his classes.
I agree, get your kids out of the public school asylum.
As would be the teacher's union bosses and executives that hold so many perfectly proficient teachers captive for their forced dues.
Often, school boards are partially or severely compromised, as well.
Your brother should not be surprised, public schools are a Fascist enterprise, and a typical knee jerk response is to kill the messenger.
I wish your brother well.