As a veteran of 50s - 60s Catholic schools (until I escaped...) I'm quite familiar with school spankings, though I never actually witnessed one (luck of the draw).
One nun who was teaching 7th and 8th graders would take kids out in the hall for a spanking though it never happened in my particular class even though I had her for a year (she taught math so opportunity was missed.
I was already for it. One day a guy was copying from the test of the girl next to him. He was a bit of a scoundrel but she was the brightest, prettiest, and pretty much a regular angel. Man I was ready, but she merely took both of their tests and gave them a zero. Dang.
My youngest brother had a teacher in 3rd grade who spanked a neighborhood kid over her knee, bare bottom.