My post seemed to have implied that the main reason you should stay is social. I think that is mostly true, but I did not intend it to be in the sense of "learning social skills with your peers". I kind of don't know how to explain it.
What I mean is you are at a point in your life when people are in high school. So you should be in high school and enjoy it. The whole social aspect is simply because high school is social. If you are not the social type, hey no one is saying that is a sin. All I'm saying is, in some ways, are lives are longer then we think (even if it never seems like it) so we ought to just appreciate where we are now. The thing is I was so much like you. SO EAGER. And now when I look back, I realize that was a mistake.
So I think my advice is not so much "stay in school because its socially good", but how about "stay in school because there is no rush". In other words, no need to be so eager! The whole hangup on the social aspect is very simply because I believe a large part of Happiness is derived from social experiences. Trust me, I'm not a social kind of guy, I do not have a facebook. But it is in that, that i am able to appreciate the value of humans as innately social beings.
You will accomplish all that you want, if you want it and keep at it.
Best of luck to you man. Stay in touch here at HN and we'll see how it works out!