school?

Sitting here and wondering how i am ever going to pass exams...
i try i really do...but it doesnt seem to do any good. It's odd how i study my arse off, and yet i still fail some of my tests. I study the same for all my tests. I'm thinking its a teacher-preference thing. Really, its not that far-fetched of an idea. In my high school if you arent wealthy enough to pay off the teachers, you'll be stuck with a B all year, even though your an A+ worker. I know it seems unfair, but you get used to it. Education is as corrupted as politics nowadays. And it's not like I'm paranoid person or anything. Its a proven fact. My chemistry teacher in my sophomore year didn't like me because my mom emailed her once about how my mother didn't really like her teaching methods. and it wasnt even mean or annything. My mom said it nicely. and all year i had to bust my arse and i got off with a C. I'd never got a C in a class before then, and still havent. What does that tell you? And i understood cehmistry really well, so...screw the teachers.
i just plain hate school. you spend a disgustingly long time learning things that have nothing to do with your career. im going to be an assitant anesthesiologist nurse. what does learning about finding "x" have to do with that?? and don't tell me , "we'll it prolly does, you'd be surpirsed." I did my research. That concept doesn't involve what i want to do.
*sigh* well, i only got a little longer so i'll just hold out.