George Washington High School is a public secondary school located at 298 Washington Drive in Mangilao, in the United States territory of Guam.
The school, a part of the Guam Department of Education (formerly Guam Public School System), opened in 1965 and serves grades 9 through 12.
As of 2014 the school serves the villages of Mangilao, Agana Heights, Chalan Pago-Ordot, and Sinajana. At the start of this school year, students residing in the villages of Barrigada and Mongmong-Toto-Maite are required to attend Tiyan High School.
The U.S. Census Bureau puts the school into the University of Guam census-designated place.
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Student body
During the 2009-2010 school year, the school had 2,610 students. Of them, 1,750 (67%) were Chamorro, 346 (13.3%) were Filipino, 199 (7.6%) were Chuukese, 60 (2.3%) were Palauan, 43 (1.6%) were Yapese, 37 (1.4%) were Others/Mixed, 34 (1.3%) were White, 32 (1.2%) were Pohnpeian, 17 were from Saipan, 14 were Korean, 13 were other Pacific Islanders (such as Fijians), 12 were African American, 11 were Marshallese, 8 were Chinese, 6 were Hawaiian, 6 were Latino, 6 were Kosraean, 5 were from Rota, 3 were Japanese, 3 were Samoan, 2 were Native American/Alaska Natives, 2 were Vietnamese, and 1 was Indonesian.
As of 2025, 74% of the students are eligible for Free Lunch and 26% are eligible for Reduced Lunch under the National School Lunch Program.
George Washington High School requires uniforms, along with the rest of the schools under the Guam Public School System.
Notable alumni
Esther Aguigui, Guam adjutant general
Bob Barney, American academic and sports historian
Dave Barney, American educator and swimming coach
Lourdes Perez Camacho, Guamanian Medical Technologist and First Lady of Guam.
Carmen Fernandez, Guamanian businesswoman, politician, and college administrator.
Franklin Quitugua, Guam politician
Rosanne Santos Ada, Guamanian First Lady of Guam.
Roman Tmetuchl, Paluan politician
Frances Tydingco-Gatewood, Judge of the District Court of Guam