I'd say just talk to someone about it. Anybody, if it's coming down to the point where you're thinking of drastic things, talking to somebody about it can't hurt. Life is tough, we all go through it. It's our emotions that hold us back for make us go forward. If you need help with you emotions, you need to talk to a doctor/therapist. Or your parents, if you are comfortable with it and they aren't the perpetrators.
In all honesty, I understand. Not in exact ways, but I can. My parents are seperated, my dad a meth addict, my mother a pill abuser and random drug addict (MDMA, Meth, Heroin.). I live with my mother, her parents, and her grandmother (being my great-grandmother). My grandparents yell at me constantly. Anything. Tell me I'm a disgusting excuse for a human being.. I've been through the thoughts of suicide and the thoughts of just never wanting to wake up. Honestly, the way I stopped my thoughts were fighting back and just separating my grandparents from my life. Just no communication. My great grandmother is great though. She's just understanding and helpful. Hell, when my mother went to jail for robbery and they found heroin on her a month... it was a hard time.
Recently, I've just decided that what you have to do is not care about it. It's difficult, I understand. You have to realize YOU DO have a future, and they are just trying to blow out your candles. I advise you to take those candles and light yours back up, keep theirs lit, but yours shine brighter. If you let it hurt you to a point where you decide to do something dangerous, you make them win. You don't want that, be competitive about YOUR life. Do what you want to do. Keep them from prying into it and changing you, or ending your root of the pursuit of happiness.
I see you have donator. You have someone out there who cares about you, you're closed in with depression though, you can't see the people who love and care for you.
If there's a problem with close family that is physical... call social services. I can't recommend anything else, I go through abuse in my house everyday. Nothing physical though, just the screams and the knowingness of your grandparents hating and resenting you, your 3 siblings and mother. Hard, but after a while if you stay strong through whatever you're going through, you'll do fine.
TL;DR: Get a therapist/counsler/someone to talk to. If school is really cracking down on you, ask someone in your close family you trust if they can change your schools. Start anew if it's that bad. Anything physical at home? Social services. Be strong. Don't self-harm.
Start focus on things that makes you happy and leave everything else alone :3
