The reason I am failing college and need help?

I dont really know how yahoo answers works but im trying. I was taken out of public school in the 8th grade i never finished home school i'm basically a middle school drop out. My step mom and dad took me out then decided they would let me go to high school if I ped well I didn't get to stay because I thought I failed. (found out later that I ped with A's and B's) so only a semester of high school which was 3 years ago my whole family thinks I graduated thanks to my parents. I started college with my boyfriend in august and im failing my remedial cles I've already had to drop a cl because I couldn't handle it. I really want to know if there is anyway I can go back to high school and graduate with a proper education, so I will have a better chance at my future. Im really embarred to admit that I didnt finish high school my bf didnt know till a few months ago. Please any advice would help.