Hi. My husband had the exact same thing happen to him. 13 taken out of school to home-school. Yeah right! His pioneer mom was out knocking doors - too busy to educate her son. Now he's 28 and has to work as a painter. Not that big a deal. Where else can you make 50K and only work 10 mos. out of the year. But he HATES it. Why don't you go get your GED? I keep telling my husband that but he is afraid.
Don't be afraid! Just do it. You can get another great job in your same line of work and you wont have to lie. It'll take a few months. No big deal. I think you should get your GED.
Good luck!