I don't know why this was modded up. That's like saying if one can't pay the $20,000 credit card balance, American Express will delay charging interest as long as the user charges up $2,000/year more. I think one would be better off just paying the interest than adding $2,000 of classes that they will have to attend.
Also, free interest or low interest as "aid" is a joke. You still have to pay the entire amount you borrowed.
I think the only time your strategy makes sense is if you can pay $1,000 to enroll in community college for one semester in order to stay on your parents' health insurance from June to December, which comes out to $140/mo, and the quotes you received for health+dental+vision were $500 a month, therefore saving approximately $2,500 per semester, or $5,000 a year. (And I believe if you're from Massachusetts, you can stay on your parents insurance as long as you're a dependent in income level even if you're not a student.)
Yeah, but you get a 6 month grace period after school's over before repayment begins, and you usually have several financial hardship forbearances you can take to postpone repayment. Even then, you can go back to school for one semester, and reset the grace period and financial hardship forbearances.
So, you have at least 18-24 months of forbearance/deferment before you have to begin repayment, and that can be hacked indefinitely by taking 6 credits at your local community college.