Guam High School (GHS or GMHS[2]) is a U.S. military operated secondary school located at 401 Stitt Street in Agana Heights in the United States territory of Guam.

[3] The school, a part of the Department of Defense Education Activity, serves over 500 students grades 9 through 12.

The school serves children of military personnel stationed in Guam.

In September 1997 the DoDEA opened its own schools for children of military personnel.

[4] It is within the Naval Hospital census-designated place, defined by the U.S. Census Bureau.