My American high school did this in preparation for promotion night. Two teachers would play the role of the parents, and they would tow a couple of totalled cars onto the football field. The entire school would be paraded out into the stadium to watch the police come and tell the parents their child was killed after driving under the influence.
The DJ at my senior prom played a song where the chorus said something along the lines of "Put your hands up if you're an alcoholic". Of course everyone (17 & 18 years old) threw their hands up and danced to that one.