My step-mom is my teacher

So basically my dad told me he got a new girlfriend and asked me if I was ok with it even if it was a little awkward and I said yes.Later he took me to dinner to meet her and it was my teach for Social Studies and I thought it was awkward but she was a nice teacher so I thought it would all work out.I only saw her at school so it wasn't much different but about 2 months later she moved in with us and that's when it all got awkward. I will be honest I was probably mean to her sometimes but I felt like she was equally as mean to me.She would get mad at me for no reason and she always tried to take control.My dad just always sided with her.Whenever I would go to school I hated goes to ss because I knew I would have to see her.I always felt like she was targeting me in class and calling on me when I never knew the answers. I was pretty sure everyone in that class already knew because I did tell some people.Sometimes in class she would get mad at me because I didnt have my homework done and she would send me out to the hall and it was so awkward because she would yell Infront of the whole class.When she would later come out in the hall she would give me a lecture about how she doesn't like my attitude and stuff and then I would go in class.About 8 months later my dad sat me down and her kid and they told us she was pregnant.I was so mad I got up and let the house and I went to a Friends house nearby.I told my mom where I was so no one had to worry but I stayed there and I didn't go back home that day.When it was the next day I knew I couldn't ditch because then I would have to have a detention with her and that is longer than the class anyway.I came in at the last moment and she looked at me after taking attendance and told me to come in the hall she talked to me about why I left and I didn't say anything and I said I don't want to talk about this and she said ok but we will talk tonight and that's basically what's happened so far and my life isn't so great

Poor teacher.

Update: I asked my dad if I can change my class with her and I explained the reasons why he said he needs to think about it.Later my step-mom and my dad came up to me asked asked why then my step-mom got mad because I wanted to and she basically said if I participated in class and got my homework done class wouldn't be so miserable

Update:You guys aren't going to believe this I think I'm getting suspended because of my freaking stepmom! And it's not like a normal suspension I have to sit in her room the whole day!! I don't know what to do this is terrible my dad will freak on me when he finds out!What do I do?!?

Now that is some ****ed-up porno storyline right there.