'''GCHS''' may refer to:
; Japan * Gunma Prefectural College of Health Sciences, Maebashi, Gunma
; South Korea * Geochang High School, Geochang-gun, Gyeongsangnam-do Province
; United States * Gadsden City High School, Gadsden, Alabama * Gallup Catholic High School, Gallup, New Mexico * Garden City High School (Kansas), Garden City, Kansas * Garden City High School (Michigan), Garden City, Michigan * Garden City High School (New York), Garden City, New York * Gate City High School, Gate City, Virginia * Gates County Senior High School, Gatesville, North Carolina * Gehlen Catholic High School, LeMars, Iowa * Geibel Catholic High School, Connellsville, Pennsylvania * George County High School, Lucedale, Mississippi * Gibault Catholic High School, Waterloo, Illinois * Giles County High School, Pulaski, Tennessee * Gilbert Christian High School, Gilbert, Arizona * Glen Cove High School, Glen Cove, New York * Grand Canyon High School, Grand Canyon Village, Arizona * Grant Community High School, Fox Lake, Illinois * Granville Central High School, Stem, North Carolina * Grape Creek High School, San Angelo, Texas * Gray's Creek High School, Hope Mills, North Carolina * Grayson County High School (Kentucky), Leitchfield, Kentucky * Green County High School, Greensburg, Kentucky * Greene Central High School, Greene County, North Carolina * Greenfield-Central High School, Greenfield, Indiana * Greenup County High School, Greenup, Kentucky * Grove City High School, Grove City, Ohio * Grover Cleveland High School (Buffalo, New York) * Grover Cleveland High School (Queens), New York City * Grundy County High School, Coalmont, Tennessee * Greeley Central High School, Greeley, Colorado * St. Theodore Guerin High School, Noblesville, Indiana * Gulf Coast High School, Naples, Florida
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