If you're in the US... Yes, child support continues--getting a GED is not an emancipating event.
No. The support order has your son's name on it, so it only applies to him.
Both parents would be liable for support in such a case.
Go to the community college closest to you and enroll your son in their GED program.
You still have to pay child support, it's for your son and not his dad, but if he is breaking your agreement you have to go to the police or court.
Depends on your state laws and what your child support agreement says but you have to pay at least until the child is 18.
I do not think so. You do not have to pay child support in any state if anyone is over 18.
no unless he can not support the child
no
see link
no
to the state, but you should file for the other parent to pay also
Here is a good place to find something that works for you http://www.tea.state.tx.us/ged/info.html