DRESS UNIFORM Required for all students. To be worn as requested for school liturgies, field trips, special events, etc. The St. John Dress Uniform consists of a white polo shirt and navy sweatshirt with St. John logo. In addition, boys will wear khaki slacks; girls in grades 6, 7, and 8 may wear the Marymount plaid skirt or khaki pants; girls (K-5) may wear khaki pants or Marymount plaid jumper.