April,
After getting married and leaving high school at 16, I went to a community college at 41 and got an A.S. in 15 months. Although it is a little odd to return to a classroom, it was much easier than I thought. Teenage issues are no longer a problem -- boyfriend problems, disagreements with parents, undependable car, etc. And I finished top in my class. :D
Best of wishes to you! Looking forward to hearing of your successes.