I know the IB program and I understand your quandry.

How close are you to graduating?

My advice would be to "go numb" where your parents are concerned, avoid them as much as possible, and concentrate on your studies. Once you complete the program many doors will be open to you that you will help you get away from your parents.

As they say, living well is the BEST revenge.

Hang in there.... not long ago, I was in your position... honors student, abusive home, etc. It can get better... it has for me.

M