Well fellow punk, you (in my opinion) have three options.
- channel your rage into destroying things
- channel your rage into proving them wrong
- not give a damn, it's your life
Quite honestly I would go with option two.
They're your parents and they love you and stuff. They're only worried about you. You can prove to them all this is not a bad thing. So finish school and get a job. Dedicate your time to bettering yourself and stuff and in the long run, prove your parents wrong.