| Abbreviation | Definition |
|---|---|
| GBMS | Gulf Breeze Middle School |
| GBMS | Gwendolyn Brooks Middle School |
| GBSE | Global Business School of Entrepreneurship |
| GBSE | Gujarat Board of School Education |
| GBSM | Graduate of the Birmingham School of Music (Birmingham UK). |
| GCC | Greensburg Central Catholic High School |
| GCCS | Galloway Community Charter School - New Jersey |
| GCCS | Genessee Community Charter School |
| GCCS | Gila Crossing Community School |
| GCCS | Gilboa-Conesville Central School |
| GCCS | Government Code and Cypher School |
| GCCS | Greater Cincinnati Chinese School |
| GCCS | Greater Clark County Schools |
| GCES | Gorman Crossing Elementary School |
| GCES | Gray's Creek Elementary School |
| GCHS | Gadsden City High School |
| GCHS | Garden City High School |
| GCHS | Gate City High School |
| GCHS | Giles County High School |
| GCHS | Glen Cove High School |