Well, I graduated from High School in 72. But you are going to have to ask specific questions. I will say this, althought my friends smoked dope, I thought it was stupid. However, I did a report on the evils of dope in my senior year and discovered there was really no "REAL" evidence for it doing any harm, Reefer Madness notwithstanding.
I still didn't touch the stuff until December of 72. And then only because I was getting drunk while the rest of 'em were getting stoned and a seriously gorgeous chick came into the room I was in and "talked me into trying it".
Come to think of it, that's the70's.
Never mind...
That's all I have to say about that...