The GCM colorguard is the visual representation of the marching band. Colorguard members are trained in movement, dance and the manipulation of equipment such as flags, rifle and sabre. Colorguard practices once a week during the summer, then daily during band camp the second half of August, then rehearses or performs outside of school hours 5-6 times a week from September to November. Colorguard is open to any student who qualifies through audition in the spring.