Fostering school spirit, pride, and respect, the RedCoat Marching Band allows Gainesville High School students to gain skills in servanthood, leadership and discipline. Uniformity of both musical and visual performance, carriage, bearing, style, physical workouts and focus are required in the Redcoat Band. The Marching Band also prides itself in earning 6 times consecutive UIL Division I ratings, being an AREA Finalist band in 2015, earning a Best in Class trophy at the Golden Triangle Classic and being a Perennial Parade Band of the Red River. As an academic machine, the band also consistently populates the top 10% of the class at GHS, 90% of the members earn scholarships to college in every field. Redcoat students are involved in almost every activity in the school.

2022-2023 Band officers:
Head Drum Major - Paola Rico 
Assistant Drum Major - Alexis Rico 
President - Jenifer Mejia 
Vice President - Makayla Davis 
Secretary - Presea Reed 
Quartermaste - Amira Kahn 
Librarian - Alexa Nieves 
Historian - Ruby Martinez 
Upper Class Representative - Johany Marin 
Lower Class Representative - Allye Johnson 
Colorguard Squad Leader - James Babcock