I'm so sorry you're going through this. Parents and family often don't support well, unfortunately. My dad was definitely one of those harmful subjects. My mom to an extent too, but at least she tried sometimes. They always think they know what's best for you and can't hear the truth.

As healingme4me suggested, could you perhaps talk to a school counselor about this?

Huge kudos to you for being able to do well in school. It's harder than people realize. I wasn't able to keep up with it and part of me really regrets not trying harder despite all I was going through. Don't let your family ruin this for you. Please try to keep going and once you're done with school and can get a good job because of it then you can make the choice to never see them again if they keep treating you horribly.