Firstly, I need to commend the members of this forum for providing solid, unanimous advice to this young bloke.
Regardless of what you want to do, stay in school. I wanted desperately to leave, but the RAAF wouldn't have me, so I finished and have never regretted it. Year 12 was the most fun of all years and I remember it most warmly of all years. I know it doesn't feel that way at the moment because you've had enough and are itching to get behind the stick, but there's a long way to go.
No-one I know of has ever regretted finishing school, but there are several I know of that regret having not done so.
And if you're in the Melbourne area, PM me and we'll go do some laps in an A36 Bonanza!
OK, I know it doesn't have a forked tail, but in the absence of something sexier it's the best I can do.
Walrus