How can I change schools?
Well, the class is shit. There are only 17 of us, and only 4 of them are boys. I had friends, but they all changed schools. 3 of the boys are annoying nerds, and the other one used to be my friend, but he's become toxic and annoys me sometimes. The thing is, the school is really good, and my parents think the class is great and I'm friends with everyone. It's hard for me to explain it to them because I don't have a good relationship with them, and I'll get told off for not telling them. I go to a Gymnasium (high school) in Baden-Württemberg, by the way.
You won't be able to avoid convincing your parents that school isn't for you.
If your school has a guidance counselor, you could talk to them and, if necessary, schedule a meeting with your parents. The most important thing is that you learn well at school and feel comfortable.
Your parents must agree and also pay the travel expenses for the longer commute.
But you're also getting into the course system now.