please someone help!

I think the best thing bạn can do is try telling your parents to lower their voices down a notch. If that doesn't help than try going to someone's house for a while to do it- like on of your friend's.

If it's the kind of stress that turns into anger then try screaming into a cái gối, gối and just laying there for a bit. If its not that kind of stress then try finding something that bạn like the smell of like a scented candle. And if it's not too hot then bạn can bọc yourself in a fluffy blanket.

just do something that is calming, like sleeping hoặc reading.

hoặc if youre Công chúa tóc xù enough go downstairs and tell your parents that their fighting is stressing bạn out, and see if that solves the problem

Try nghề viết văn about it. It usually helps me.
It works better if bạn make it out to be a letter to someone who is stressing bạn out the most (In this case, it's your parents and teachers) describing how you're currently feeling.
Don't worry, bạn don't really have to give it to them though... It's just an amazing way of venting for me.

I feel your pain, it happens. Honestly, I would di chuyển outside hoặc to another room just to focus. There isn't much that bạn can do with fighting parents, but homework can be done in no time.