I hope he filed a complaint against that teacher. A teacher has no right to ridicule a child in their class. It is even worse that the teacher brought other kids into it.This reminds me of what happened to a friend of mine's son in the Rensselaer, Indiana school system several years ago.
He was in elementary school, and the teacher was "teaching" the class how WRONG it is to hunt.
My friend's son spoke up and told of his dad hunting deer on their land, that their family eats the meat, and there's nothing wrong with it.
The teacher then ridiculed my friend's son in front of the class, and did her best to get as many of the kids in the class to join in with her and gang up on him.
Needless to say my friend's son came home from school very upset over this.
This is a prime example of indoctrination as opposed to education.