Carlos P. Garcia High School had its simple beginning as an annex of Ramon Magsaysay High School (CUbao) High School at the start of school year 1965-1966 during the time of the Schools Division Superintendent Alfredo J. Andal. He facilitaed the rental of the formaer Hillcrest Academy (now Victoria School) building which was situated on top of a hill of Ermin garcia Street. It was for that reason that it was called Ermin Garcia Annex.
On September 22, 1971 the resolution No. 8793 passed by the Quezon City Council was approved which gave independence to the school from its mother school. The school was renamed Carlos P. Garcia High School in honor of the late President Carlos P. garcia who died in 1971 while serving as the President of the Constitutional Convention. On January 29, 1972, the school was officially declared as independent.
On July 27, 1975, upon the order of the Schools Division Superintendent, Mrs. Commemoracion M. Concepcion, the school site was relocated at Cubao Elementary School Compound.
In 1988, a city-owned lot being used as a mini forest by Eulogio Rodriguez Sr. Elementary School located at the end of Ermin Garcia St., Cubao, Quezon City became permanent home of Carlos P. Garcia high School.
From then on, Carlos P. garcia High School has made its mark as one of the best and performing schools in the division thru the hard work, dedication and commitment of its former and current teachers, staff and principals.