In South Africa you wear uniforms at school, but on civies day (allowed to wear normal clothes for a day) shit would get horrible like that as well. I remember being pulled out of assembly for wearing jeans with holes. Girls got straight up discriminated against, if you hit puberty you basically couldn't wear any kind of normal t shirt, vest, etc without some fucked up teacher forcing them to change.

Also had the blessing/curse to get a scholarship to an all boys boarding high school (think of half your classmates being a version of Elon Musk) and holy shit that was fucked up with regards to teacher-student stuff. Thinking about it now is just be🤮🤮🤮🤮🤮.