I'm shocked at your H's attitude towards his kids, and it takes a lot to shock me. My XH, an alcoholic ( Boy can I pick 'em) gave up parental rights and my H adopted our girls when they were little. To this day, he regrets doing that. D's tell me he cries at how bad a Dad he was, and they say "yep, you were" He knows that despite what is currently going on in mine and H's life, my H is the only father they ever had, not him.

Bipolar or not, your H will come to regret his words.

I know you hurt so badly for the hurt your children still don't understand, but will come to understand, just as mine did. Trust in God, they will come out of this stronger than you ever imagined. My youngest still has some Daddy issues, but she is bipolar herself, and has an encyclopedia of issues. LOL

You seem strong and determined, and I know you will bring your family through this. Congrats on the going back to school thing. I wish I had the determination to do that.