I am in favor of some kind of dress code. Not a gender specific code, but some of the things I see High School and College kids wear today is terrible.
I'm not against women wearing pants (which was not allowed when I went to high school except "under" their skirt in the dead of winter but had to be removed when they got to school), I'm not against men wearing skirts. I am against some of the short shorts, the pants hanging down to the ankles, some of the pictures and/or wording on some tops.
A degree of decency in how people appear is better for a good learning attitude. (I know, I'm old fashion).