It's been a while since this topic was active BUT...
I dropped out of school when I was 15. I said I'd do my own homeschooling, but I had no intention of carrying out that plan and pretty much sat on my ass for a month or two until one day, with a little more liquor in my system than I should have had, I sat my ass down and wrote a 23 page essay on quantum entanglement. It took me a day and part of a night. By the end of the essay I was sober, and if you read it you can actually see that transition, which I find funny.
I was a weird kid, to say the least.
Long story short, I submitted that total POS, $200, and an application to CU Boulder. I got in, on their condition that I pass the ACTs first. I barely passed with an 18, most of that score coming from the Science Reasoning and Math sections.
(The takeaway here being that I learned next-to-nothing in school aside from what I'd taught myself.)
I did the whole thing on a whim, I'm now in my Senior year, (studying Computer Science, actually, not Physics,) and every time I think about it I'm very, very surprised that my life didn't totally crash and burn when I dropped out.
My point, ironically, is that what happened to me was a miracle.
People say, "I know plenty of people who are millionaires and dropped out of high school!", but those millionaires are a vast, vast minority.
This isn't to say "stay in traditional schooling, tough it out, life sucks and then you die." That isn't true either.
Look into homeschooling, look into online alternatives, split your classes up, (take 3-4 on campus and the rest online.) find what works for you, despite the system. There's more options than they let on.