I had a young girl in my youth group that was caught 'Huffing" Freon from the churches A/C unit. (Huffing is when you release an air conditioners Freon into a baggie and then inhale it. It will cause the oxygen to your brain to freeze and give you a few seconds of lightheadedness.) I was the one who had to inform her parents of what their child did and the dangers of her actions. Of course her parents were outraged and wanted to ground her for months but I asked the father to try something different instead. Rather than using punishment as a deterrent, I suggested he make his daughter go online and do research on the dangers of "Huffing" and then write a report on the matter that she found so enjoyable. A week later, I got a call from the girl asking if she can read her report to the entire youth group. She shared about the dangers of possible immediate death, the destruction of brain cells and bone marrow, becoming mentally unstable and physically handicapped. She did so with such passion, she convinced all of her peers to stay away from such destructive behavior. Today she is a student at UNC Wilmington and desires to go into the ministry.

Source:  http://www.helium.com/items/260114-often-parents-child-their