The plot point of many high school movies is often about what is and isn’t acceptable to do, socially. For example, Regina in Mean Girls enforced a number of rules on her clique, and attempted with significant but not complete success to enforce it on others.
Have you been to an American high school and/or watched at least one movie about American high schools?
I have done both of those things, yes.
EDIT: I have also attended not one but several (EDIT 2: four, in fact) American colleges.
The plot point of many high school movies is often about what is and isn’t acceptable to do, socially. For example, Regina in Mean Girls enforced a number of rules on her clique, and attempted with significant but not complete success to enforce it on others.