Were I in your situation, I would work on/test for the GED and then go on to college if that's what you want. If you choose to stay in the Job Corps, I'd just bring "myself" each day, not money or anything valuable and just work for the little bit of pay/possible experience and any opportunities it might bring afterwards.

I'd be tempted to maybe write a book or series of essays or something about the place; do like Barbara Enrenreich: http://www.amazon.com/Nickel-Dimed-N.../dp/0805063897