How do I stay away from an annoying teacher?

Okay well there is a teacher. She is in my Social studies, Science & Femforcement.. (Femforcement is like study hall.) And at the beginning if the school year I thought that she was ok, now, I hate her. First she thinks that I always need help. She is always by my side. She just tells me answers & stares. Second she follows me to my cles. Once, I was on the third floor & I had to go down to the first floor for a cl I had. I was walking down the stairs & she was just looking at me. And she doesn't even have a cl on the first floor, there all on the first floor. She wasn't even blinking she was just stairing at me. So I started to run down the stair, & she did too. I got to the first floor I ran, she ran too. And I got to my cl I was half way in the door way & she was half way there and she stopped stared at me & she turn around and walked back to the third floor. I know that because my friend has her in her cl & she watch her do it. The third is when she is my cl she stands right next to me and makes sure I do it. And sometimes I just need to sit for a minute & she sees me come in and she yells at me because I didn't take out my adgenda write away. And I can feel her breath go down my neck in my classes. And sometimes she will even yell at me because I skipped a question & we are allowed to skip around. The fourth is that she trys to tell me what to do like In remforcement she tells me that she wants me to work on a subject. Like I will be working on math and she will want me to work on science homework when you only haft to review the paper. And she tells me that i haft to do it or go to inschool. So I kind of haft to. And the fifth and the last she gets mad at me because I might if gotten a 55 on a test. Like once It was in the middle of second quarter & I got a 57 on my Social studies. I know that I got an F on a test & the lowest I gotten is a 76 on a test. She cames over to me & starts to scream at me. I hate her. What should I do? Help?!