So sorry for you, my mom has been an alcoholic for about forty years, I am 49.
The only thing you can do is disengage, go to your room and lock the door, get in your car and leave.
If you live at home you are going to need a friend who knows the score so you have a place to crash when things are bad at home.
There is no point argiung with a drunk, they don't remember while they are drinking and are in denial when they are sober.
Please see if your school offers counseling service, or talk to your doctor for a referral.
Remember your job is to take care of you! Get enough rest, get the best grades you can, eat right, cultivate friendships, lots of other people have addicted parents, people will understand what you are going through.