My daughter is 19, and has never been drunk or high. I didn't even raise her to be like that.. I hoped it's the choice she would make, but I didn't really expect it. She made the choice herself. She has no interest in drugs or alcohol, and I don't think she ever will. She has only two friends who party, and all the rest made the same choice she has made.
I have 18 year old who thinks its ridiculous how many teens she knows feel they have to get drunk or high to have a good time. She thinks just being alive and pain free is a great day(she has a chronic illness). Thank goodness her best friends don't feel the need to behave in those inappropriate ways. And yes, I did raise her like this.