GHS (high schools)

=In the United States=

* Greenbrier High School, Evans, Georgia
* Gabrielino High School, in California
* Gaffney High School, in South Carolina
* Gaithersburg High School, in Maryland
* Garfield High School (Akron, Ohio)
* Garfield High School (New Jersey)
* Garfield High School (Los Angeles County, California)
* James A Garfield High School (Garrettsville, Ohio)
* Garfield High School (Seattle, Washington)
* Garland High School, in Texas
* Gateway High School (Kissimmee, Florida)
* Germantown High School (Philadelphia), in Pennsylvania
* Germantown High School (Tennessee)
* Germantown High School (Wisconsin)
* Gervais High School in Oregon
* Glastonbury High School, in Connecticut
* Glendale High School, in California
* Glendora High School, in California
* Glenwood High School (Illinois)
* Mills E. Godwin High School, in Virginia
* Gorham High School (Maine)
* Gorham High School (New Hampshire)
* Goshen High School (Alabama)
* Henry W. Grady High School, in Georgia
* Granby High School, in Norfolk, Virginia
* Grapevine High School, in Texas
* Greenwich High School, in Connecticut
* Guilderland High School, in New York
* Gulf High School, in Florida

Outside the United States

* Garvagh High School, in County Londonderry, Northern Ireland
* George Heriot's School, a primary and secondary school in Edinburgh, Scotland
* Girls' High School and College, in Allahabad, Uttar Pradesh, India
* Gokuldham High School, in Mumbai, India
* Good Hope School, in Kowloon, Hong Kong
* Gorokan High School, in Gorokan, New South Wales, Australia
* Gosford High School, in Gosford, New South Wales, Australia
* Gosforth High School, in Newcastle upon Tyne, England