Again, whether or not he goes to classes, whether or not he's got schizophrenia, and whether or not he has another drink...is entirely HIS business. I know it's hard but for your own sake, I would gently suggest that you step *away* from the madness of HIS addiction and focus on your own healing.
I'm glad to see that your post ended with something about YOU, the most important person in your life! If you don't take care of yourself, who will?
Keep posting!