I most definitely understand about being tired of school; I didn't even wanna start in the first place, and I really hated it when it ate up so many hours in junior high and high school. My first two attempts of high school ended after 2-3 months and the third attempt ended 1 1/2 year from the end of it (well really 2 1/2 years, as I would have needed another year because it was vocational school and needed more hours per lesson to be an all round high school degree).
The last year I went there (until January 2005) I felt so worn out and exhausted that I was in no shape to learn more, and I couldn't comprehend the math, chemistry and physics at all. I had no way of passing and I had no more energy left. Autistic burnout. I had nothing left to give.
I still highly recommend that you manage to stay in school the remaining 2 1/2 months you have left there though. You don't wanna have to try to take it up later or be a drop out like me. Take refuge where you can, in games and music and spend as much time as you can taking care of yourself so you have as much energy as you possibly can have to manage what remains of your time in high school.