I hope you are having discussions with your daughter about the power teachers have to affect her grade.
Yes, we talk about that quite often. My daughter did not write what I said back to her teacher, and I knew she wouldn't. But she got the point.
I have been countering the lefty indoctrination of the school system since she was in kindergarten. Now that she is a teenager, she's not shy about arguing back to me when she disagrees.
But at least she has a very healthy skepticism and good radar about the lefty propaganda they try to foist on her at school.
Her school system is a "Common Core" adopter.
No, teachers do NOT have the power of life and death over my kids. It's not like they're trying to get into Harvard (a semiliterate Community College disguised as a "University"). My son's conservative and has a 3.6. My daughters are both honor roll HS students and are also Conservative.