Alcoholic mum

My mum has been drinking for as long as i can remember and i am 16 years old. She is extremely emotionally, verbally and sometimes physically abusive towards me (My dad suffers depression and does nothing about the whole situation).

I do not think I can carry on with my A-levels if I still live here. My friend is aware of what goes on and has offered me to live with her, I really really want to. I also worry I have developed depression as sometimes I can't bring myself to get out of bed and go to school. Which I need to as my gcse's are next month.