Hi,
I hated high school. Plus my family moved a lot so I got my GED too. Then I went to college.

1. Your state probably has rules about the GED -- like he has to be a certain age (16 maybe), has to be officially withdrawn from the school system, and some other stuff. He might be able to take the test and pass it right now with out the adult ed classes.

2. Your state might have an online public high school. He can take classes over the computer.

3. He probably qualifies for various visiting teacher programs -- the teacher comes to his home to work with him once or twice a week.

It sounds like he might not be able to manage summer school. Can he manage adult ed?

I've got no good ideas about the grandmother. 'Sorry that you have to deal with that.

You might get more answers if you post below in the regular bipolar section. People don't look here much.

Mari