For example, i go to a religious school right- and when we said a religious comment (which was on topic btw as we were talking about representation and many types of religion were brought up) to my english teacher she called it a fake made-up story that isn't real. Like ok your beliefs are your beliefs and that's totally fine- but keep them to yourself, especially when you're in a strict religious school. She didn't apologise or realise she probably shouldn't have said that- instead she sat with a smile on her face like she's just won the lottery.
And when they get mad at you and yell because you're trying to improve but instead they just get annoyed by your presence and questions. Like that is not ok and you're doing more damage than anything.