All participants are expected to adhere to the BYU Honor Code. This includes no alcohol, smoking, coffee, or black tea on campus or in REU apartments and the following dress code:

Men

A clean and well-cared-for appearance should be maintained. Shorts must be knee length or longer. Hairstyles should be clean, neat, and trimmed above the collar leaving the ear uncovered. Sideburns should not extend below the earlobe or onto the cheek. If worn, moustaches should be neatly trimmed. Men are expected to be clean shaven; beards are not acceptable. Earrings and other body piercing are not acceptable. Shoes should be worn in all public campus areas.

Women

A clean and well-cared-for appearance should be maintained. Clothing is inappropriate when it is sleeveless, strapless, backless, or revealing; or is form fitting. Dresses, skirts, and shorts must be knee length or longer. Hairstyles should be clean and neat, avoiding extremes in styles and colors. Excessive ear piercing and all other body piercing are not acceptable. Shoes should be worn in all public campus areas.

For more info see http://honorcode.byu.edu.