Hi There,
Why do you hate school? What about school depresses you?
I've noticed that a lot of people hate school, they dread it, it makes them really stressed and the things that stress people about school are things they can change or get help for so that school can be a better place for people.
SH will not solve anything. Neither will killing yourself. You will be done with school one day and you will not have to put up with whatever it is that causes you to hate it so much.
School is temporary, not permanent. It will end, you can get through it (millions of people have and millions more will). You are no exception to being able to survive school.
If you act to fix, or tell people and get their help, for the things that bother you or make school a not so enjoyable place, your outlook may change.
Hope this is helpful.