Jess, I hope you listen to Silverfire and the others here who so much want to see you happy and healthy.
If you really are in a situation where it’s preferable to harm yourself than stay with your parents, something has to be done. There are places to go, there are people who can help you, there are things that can be done to help you solve your problems.
First, find an adult that you trust to talk to. Maybe it’s not a counselor at school (my counselors were never much help at all). It could be a teacher, a janitor, a coach, a vice-principal, your boss, a co-worker, a member of this board. If you can’t think of anyone, take a look around an find an adult that you think has their shit together, acts with kindness and wisdom, and treats you with respect. They may not be able to wave a magic wand and make it all better, but they should be able to give you a place to vent and perhaps some ideas to work from.
Second, even though your father is a rabbi and you’ve had religion shoved down your throat all your life, don’t discount the help a cleric can give. Not all rabbis are the same. Not all of them shove religion every chance they get. Most of them, because of their calling to serve God, believe that simply helping others is the way to do their work. A good rabbi/priest/whatever can counsel you and also - very important - put you in contact with some resources.
Third, take a look at what is required to become an emancipated minor. Then check the local charities, shelters, youth hostels, and what have you. You may be able to find housing with them. Don’t hesitate to call relatives that you trust. It may mean that you have to move away from your home and friends, but there is always mail, phone, and Internet to keep you in touch. Besides, after graduation, you’d be looking at the same separation anyways.
Fourth, call a mental health hotline. The site I found that list at looks like it has tons of resources. I’ll bet there’s something there for you.
Jess, you’re too valuable and wonderful a human being to be damaged like this - either by yourself or anyone else. Please, whatever decision you make, make it on the basis of what does the least harm and most good for you.