Hi minimus!
We had teens ( three that I knew of) who both smoked weed and drank, but I don't know about any adults. We teens avoided the adults as much as we could. And the teens who were thought to tell on us( I was in with the "in" crowd for a few months), just werent invited to "hang out" with us. I never smoked weed ( did cigarettes though) back then but I did drink. I never ratted on anyone who I knew was toking, nor drinking. The teens who were in the "out" crowd may have been doing the same things that the "in" crowd were doing for all anyone knows!
peace,
somebody/gwen