My husband said the same thing about his Catholic school education - he saw kids slammed into lockers, a girl picked up off the ground by her hair, a nun slam a window down on a kid’s hand - husband was hit in the back of his head by a board by a priest.
He knew there was no way he could report this at home, it would be 100% his own fault, and punishment from his dad would be far worse.
my HS teachers were priests off the streets of dublin, many soccer players. I was talking in class and not looking forward. Father fergus creeped on me and kicked me in the left shin. I was 15. I am 77 now and I still have a dent in my shin. My eyes used the tear up when I thought about it. I also learned you can lift someone our of a chair by pulling their sideburn and no bruise or sign of anything.
I’ve been there, the Nuns would proverbially “Preach Heaven to you and beat the hell out of you”.