I disagree with corporal punishemnt at the school level. This is very fine line.
I believe is to be left to parents who really know how and when to use it.
I used it with my three daughters..long time ago, and they are fine young ladies and we make fun of how I used to "punish" them. I learn a lot since then, now as a grandmother I try to use time out, talking about the problem before I will spank them on their behind. Never believe in smacking their faces ever. If the get a spank is more about a safety issue where they are to do something that my hurt even after I had say no!
My take on this one!