I went to a relatively small school and the only kids that ended up being problem children were the ones that were over indulged by their parents.
Never underestimate the disuasive value of the fear of an ass kicking.
That being said, turn off the MTV, it is the absolute worst thing for kids to be exposed to.
Having been on the receiving end of many an ass kicking as a kid, I have to concur.
My kids know better when they get "The Look". Two ass kicking (one each) were enough to stop the madness.
It's not allowed in my house.