| Acronym | Definition |
|---|
| FCHS | Fluvanna County High School (Palmyra, VA) |
| FCHS | Franklin County High School (Rocky Mount, Virginia) |
| FCHS | Franklin County Historical Society (Ottawa, KS) |
| FCHS | Farmington Central High School (various locations) |
| FCHS | Fort Collins High School (Colorado) |
| FCHS | Falls Church High School (Virginia) |
| FCHS | Fayette County High School (Fayetteville, GA) |
| FCHS | Frederick County Humane Society |
| FCHS | Fort Campbell High School (Kentucky) |
| FCHS | Floyd County High School (Floyd, VA) |
| FCHS | Franklin Community High School (Indiana) |
| FCHS | Frankfort Community High School (West Frankfort, Illinois) |
| FCHS | Faculty of Computing Health and Science (Australia) |
| FCHS | Ford City High School (Pennsylvania) |
| FCHS | Ferny Creek Horticultural Society (Australia) |