Re: I am disappoint...
17 years olds drinking with their teachers has much to commend it. Less likely to get bladdered and the kids see that drinking sensibly can be fun.
I certainly remember that growing up in a culture of prohibition inculcalted a desire in my generation to get drunk. Hence, a fondness for cheap and disgusting Thunderbird, White Lightning, etc.
I also remember trying to take my younger brother into a pub with me for a breather during Christmas shopping and be refused entry – he'd have only got and wanted a soft drink. Because I'd already been to the continent a few times where in many countries it's perfectly normal to see whole families in bars, this really jarred and still echoes discrimination againts families, though I think things have improved a bit since then.
That said, I think recent research indicates that young adults are particularly sensitive to alcohol so moderation really should be observed.