Nuns were just as bad - I had my hand smacked with a pointer for “wasting paper” because when practicing our writing, we wrote prayers and I didn’t squeeze the word “Mary” at the end of a line, but wrote it on the next line - and we only used half the sheet in the first place...
I’m glad I only went to CCD on Sundays. I remember one boy was reprimanded for something, I forget what, and he was pouting. The nun told him to stop sticking his lower lip out or she was going to cut it off with her scissors.