I can't do this anymore....please, please help me?

I hate my life, and I feel like I have no reasons left to live. I've been dreaming of going to an agricultural high-school for years, and my parents are only dangling it in front of me. They are going to say no, they have been e-mailing their friends and saying so. I have my dreams relying on that school, and if I can't go there, I don't want to live anymore. I want to be a vet, and own a farm, and if I can't learn veterinary science, or farm management at that school, I'll die. My parents don't even care that I want to die....please help me.....