Please Help me with school issues :/?

hi :/ im in unoted kingdon (england) and i dont want to go school anymore becuase i dont like it. I get bullied alot and no matter how much i try and sort it it always builds up again. I dont like some of my teachers becuase they are unreasonable and and sometimes bullies themselves. i get really depressed and last week made my self sick so i could have 48hrs off i dont want my parents to know becuase ive told them so many times and i dont want them to wory i want to quite school becuase im exhastted with it i cant go on im on the brink of doing something stuped to get me out of thier for good. im not spoiled or anything im caring and i just dont want to go there anmore ive got to get out :( please help