In my personal experience, since dd is 7, and this is a question I will have to deal with, I was not allowed to date until 16, which made high school dateless. Although it was rather strict, there was a lot of "group dating" and parties.
There was also good sex education from my mother, who said I had the responsibility of pregnancy. She said sex was great, but I was the one who had the risk.
It is all dependent on your kid, the crowd (I was a cheerleader and partied hard in high school so waiting was great protection from myself). I did have a boyfriend in grade 12, he was no genius but a foot ball player. I think if I had better taste in men (finally as I got older I did) dating wouldn't have been so risky.
Ren