I started drinking regularly/getting drunk probably at about 16 when I started going into town on a Friday or Saturday night with my mates. This was normal among my friendship group. I had the occasional drink at home with my parents from 13 or so but it was a treat, not a regular occurrence and I wouldn't have got 'drunk'.
This seems to be the same with my current young teen daughters (13 and 14). I let them have the occasional one-off drink but they don't yet go out to parties or at night and neither do their friends so drinking is not really something they want to do. They're still quite 'young' for their age but they're developing their independence and happy and to me that is what matters.
For full context/disclosure, they/I both go/went to an all girls private school.
The view has been expressed to me recently that it's not normal for my teens not to drink. I'm depriving them of the experience of 'proper' teenage years. The person who expressed this thinks I missed out because I didn't drink/go to house parties/smoke weed/have sex when I was 13. I don't think I missed out at all and I'm sure I'm doing the right thing for my girls but I'm starting to wonder .... am I that unusual? Was it a private school thing?