Since the 2006-2007 school year, all Wylie ISD students in grades 5 through 12 have had to comply with a standardized dress code, which is similar to a
school uniform. In the 2007-2008 school year, the dress code went largely unchanged, except that hooded sweatshirts were not accepted. The dress code included wearing a tucked in solid polo shirt, turtle neck, or button up shirts. Bottoms were specified to be pants, shorts, or skirt, paired with a belt, in khaki, black, or navy blue. In 2011, the Wylie ISD school board officially changed its policy to allow hooded sweatshirts, pants with rivets, cargo pants, colored belts, and shoelaces. The dress code was changed again in 2017 to allow all hoodies, untucked shirts, and mock turtle necks. In May 2021, dress code was changed by the Wylie ISD school board once again to allow a more relaxed dress code for the 2021-22 school year. The dress code allows for solid colored pants, but still prohibits: holes, rips, and or tears. As of the 2025-2026 school year, Wylie ISD has updated the dress code to allow non-collared shirts that have sleeves and fully cover the chest, back, stomach, and shoulders, one small nose stud, and all bottoms with no rips above the knee that reach the mid-thigh, excluding leggings. == Demographics ==