I want to drop out of school

My life has been hell the past year. I feel I can’t concentrate on anything, I’m a nervous wreck for every test, I have breakdowns almost every day. I’ve been diagnosed with depression, severe anorexia, and anxiety disorder … I’ve isolated myself and lost all my best friends … I’m so lonely, all the time. I have angry outbursts and crying fits all the time now. I won’t take antidepressants because they make you gain weight and I was already forced into recovery at a terrible ED clinic, which I have nightmares from now, and I feel terrible and fat and disgusting all the time.
My grades are good, I have 4.2 GPA and many APs. But I have no motivation anymore, and it’s my senior year. It doesn’t help that I missed the NMQST semifinalist cutoff in my state by one point and had the highest possible score that could still miss it. My parents can’t afford college either, even though we don’t qualify for any financial aid. I don’t even see the point in finishing out high school.

Are you getting professional help for this stuff?

Get professional help. Take the medications prescribed for you, and work with your doctor to adjust the doses and medications until you find one that works.