I'm really sorry this happened, Rebecca. My depression has affected every aspect of my life, not just school. This thing we have to deal with makes everything harder. We start out blaming ourselves for everything bad that happens, and then when worse things happen because of that, we blame ourselves that much more, and feel more justified in doing so. It's just a total spiral. I hope I can help you halt it.

I would try to stay as calm and safe as you can for now, and when you're feeling better (I know you will feel better), see what you can do to make the situation better. At about your age, I got kicked out of school. It took me a while to go back and finish, but I did and got a half-decent job afterward. Depression doesn't seem to serve any good purpose at all, except to understand and help other people with depression.