I know I'm just echoing everyone else's sentiment, but you should stay in school. You started, so why not just finish. Photography will always be there, and there are many many ways to learn the art. I'm learning on my own in my spare time, doing lots of reading and shooting whenever I can. In my experience, it's been the best way to learn and it didn't cost me a dime (other than gear, etc.). On the side, you can volunteer for school or local newspapers, or join a photography club or meetup where you can interact with other people like you.
It's tough out there, especially for professions where a real entrepreneurial spirit is required, like photography. It doesn't seem worth it to drop something very valuable when you don't have to at all.