Did you tell anyone what he did? Sorry that happened to you.
I told my father when we were on the way to the beach several days later. He almost drove into th ditch and when we got back, he went to the school board. Not much could be done as the boy was special ed and was going to stay in the class. I didn’t notice any different behavior from him other than keeping it in his pants. When we were in fourth grade he would get behind us and rub his pelvis against us so we would move away when we saw him getting close to us.
We also had an AA substitute teacher called Daddy Rook but that is another crazy story.