Responsible 4th, 5th or 6th grade citizens of Horseshoe Trails Elementary School can join Flag Corps. The purpose of the Flag Corps is to raise and lower the American flag and the State of Arizona flag when school is in session, weather permitting. It is an honor to be a member of Flag Corps. Being involved in the flag detail allows us to take time to reflect on the contributions of others. There is a lot of pride in being a part of the tradition every day of raising and lowering the flag.