Malka

Let me make clear that what you are doing is great. Educating the kids that smoking, drinking, and HPV can cause oral cancer is very much needed. My comments above deal with some of the other issues raised on this thread.
I wish I did know a way to get a message effectively across to teenagers but I don't. As long as you stick to the facts, throw in a few cites to some of the studies on the OCF main page, I'm sure your presentations will be both legally and socially acceptable. Don't forget these kids watch South Park. My wife and I were amazed at the graphic stuff just last night - it was funny and we laughed but it would never have been on TV when I was these kids ages.
Keep up the good work
Charm