Here's my list:
No cleavage. Period. Front or back.
Waistbands will be no more than 3" below the waist.
No underwear showing. Includes bra straps, boxers, or any other garment traditionally designated as UNDERwear.
No garment shall drag on the floor.
No high heels.
No swear words allowed on clothing, backpacks or books.
No artificially coloured hair. Special permission may be acquired from theater teachers, if necessary for a production.
No piercings, other than ears.
Dress codes shall not be used to harass students.
I don't care if their pants are pajama bottoms. I don't care if they have holes in their jeans, as long as what should be covered, is.