I believe the government and some other organizations offer programs to help you get your G.E.D. The government wants you to get it so you can get a better job and pay more taxes. Check out local community colleges and places like that. Remember that a big part of art school is your abilities too. Walk before you run and get that GED. Meanwhile improve your photography so people can see that you have what it takes to be good. Then you just have to prove you have the discipline to hack it in college. Dont let something like a GED stop you from getting into school.