What state do you live in?
We live in Pennsylvania, and there is a very strong cyber school program. It is all computer based, with some courses that are done self-study through the internet, and other courses that are with a live class on the internet.
I have not enrolled my children in this school (yet, we are looking at it for middle school for my 10 year old), but I have a friend who's son is a sophmore in high school who's been doing cyber school for two years, and he loves it. He gets his social life through belonging to band (he still attends his public school for band purposes), through boy scouts, and through his church, so he's got a well-rounded life.
I would definitely suggest that you look into something like this. If you think that you can self-motivate, and make sure that you do your own work, then a type of cyber school is definitely for you. The one thing that I think you might want to do on the side, though, is make sure that you take an additional SAT or ACT prep class, because I'm not sure how well these cyber schools prepare you for those college entrance exams. I just think that they are new enough to the game that you may need additional help in that area.
Kris