I don't have any issues with a dress code and encourage one. I went to a private school with a pretty strict dress code. You had to wear slacks, button downs, and school logoed polo's in the summer. I went to an all boys school and there were limits on piercings and hair length. You also were required to wear a belt and not allowed to wear gym shoes or sandals. You had to wear I guess business causal shoes. I never thought it was a big deal. Even my grade school had a dress code which was less stringent but you also had to follow it.