Though it was about 30 years ago, I remember the teacher in question had a huge chunk out of her bottom lip.
Where she’d been biting it in frustration at my daughter’s behavior, which was diabolical compared to home. Metaphorically, of course.
I couldn’t punish her for what she’d done at school, but I persuaded the teacher that I had no objections to her dealing with my daughter forthwith. The teacher asked if that included caning, and I said yes-bend her over here and this was in an empty classroom after school.
The teacher was a little reluctant until I told her that she’d be letting the other kids down if she didn’t deal with Madam. I’d say she was professionally detached and calm once she made her mind up.
My daughter’s waterworks & protests before during an after the first couple of strokes were also professionally ignored.
It really left its’ mark on my daughter, though she was fully clothed. It taught her a lesson, though, and I still maintain that is the only age kids will learn such things.
It was excessive, probably, but there you go.