High school isn't a church,but it would also be better if kids didn't wear jeans and a t-shirt to school too. JMO
"As the twig is bent,so grows the tree."
I would hate to meet your parents then.
Maybe they would act better in school if they did. From what my parents told me, when they were in school girls were required to wear skirts below the knee and boys couldn't wear jeans. The worst discipline problems they had in school were children chewing gum and talking out of turn.
Now that the lowest common denominator is celebrated in our culture, we have teachers getting beat up in class and shootings in the halls. Sometimes, change is not for the better.