Students permited to have body modifications

I belive the body modifications should be allowed in students, because this corporal modifications does not affect in any way the development of the class. Punishing someone for having one of this may hurt his personality or selfesteem. Having a corporal modification does not make you a bad person, you can't judge a book by it's cover. Even the best students may have a corporal modification and, keep it secret because of the absurd rules.
“My body is my journal, and my tattoos are my story.”
― Johnny Depp