GCMS organized through a consolidation between the Gibson City and Melvin-Sibley "Mel-Sib" school districts in 1993. All of the district's school buildings are located within Gibson City, but the middle school was located in the old Melvin-Sibley High School in Melvin until 2001. The district has three schools, GCMS Elementary School, GCMS Middle School, and the GCMS High School.
