What is your opinion on dirty dancing at school dances?

I’m so done with high school now, but there is something I’ve been wondering about:

http://en.wikipedia.org/wiki/Grinding_%28dance%29

Grinding (usually referred to as “freaking” or “freak dancing”) is a type of sexually suggestive dance that happens all the time at high school dances. I participated in it; almost everyone I knew did it at least once. (It’s possible we’re just more explicit here in San Francisco; I don’t know much about other places). Some people really try to get it banned and crack down on it.

I know there are a lot of parents here, so I was just wondering what you think of it. Should school administrations not allow it and attempt to prevent it at dances?

(Of course, even if it wasn’t allowed, it still happened sometimes. People can’t be everywhere at every second).