Many private schools require their teachers to dress professionally. Some schools require teachers to wear ties, while others allow business casual attire, with some variation, depending on the school you work in. Women are not allowed to wear sleeveless or revealing shirts, wide open collars that show cleavage, shorts or skirts above the knee. Sleeveless shirts, short pants and collarless shirts are not acceptable for men. Many schools require you to bring your own indoor shoes.