You're at an age where you can look forward to making an escape plan. Once you move out, your mother doesn't even have to be a part of your life unless you want her to be. Do you have any ideas about what you'd like to do once you finish high school?

I don't know if the thing about crying when someone yells at you is related to your mother or not -- I'm in my 30s and STILL sometimes do that. It's really embarrassing to do it at work and I can't figure out why it seems to happen sometimes but not others. It sounds like you have given this a lot of thought. The idea the other poster had about talking to the school counselor is a really good one.