This was not something I experienced as a student. For some reason, I was blessed to attend a school staffed by saints (not literally, of course. But the wwhole faculty was exceptional).
However, when my son was in Kindergarten, I am 100% certain that his teacher was fostering an atmosphere that catered to bullying behavior. And I’m just as certain that she was the head bully. My son has never had problems in school since that year, socially or academically. But in Kindergarten, 3/4ths of his class hated him. His teacher would single him out. If there was an altercation between him and another student, she would make him write an apology and read it in front of the class. Which doesn’t sound bad, except when you factor in the fact that the other child was not required to apologize. Not once.
Kids started each morning with a certain number of points and tried to keep them. My son started with fewer than the rest of the class. He literally failed before the day even started.
My six year-old was tearing his hair out, saying he wished he was dead, and sobbing every morning before school and I am convinced that the other kids hated him because the teacher hated him.
I have no idea why. We couldn’t get him transferred; they wouldn’t move him.
I believe (and I know how this sounds) that her problem with him was that he was gifted and bored with the curriculum and that required her to adapt her lesson plans to accommodate him and I think she didn’t want to work that hard.
I am not going to tell you what I think of her. But I just wanted to chime in about bully teachers being an actual thing. And teachers like that should be removed from the classroom. Forceably, if necessary.