Sauyo High School (formerly Pasong Tamo High School) got its name from the Barangay where the school is now located. Its name was changed in June 1994, 5 years after it moved to Barangay Sauyo.
The school started as an Annex of Novaliches High School in 1969, with one section of thirty students in the first year on a pre-fab building at the back of Pasong Tamo Elementary School. From 1972 to August 1978, it was made an Annex of Culiat High School. It then became independent on September 1, 1978.
After 21 years at the back of Pasong Tamo High School, the school moved to its new campus on October 26, 1989. This is a 4,747 square meter lot donated by the National Irrigation Administration at the NIA Village, a middle-class subdivision in Sauyo, Novaliches.
The school has two sites: Site 1 situates the two-storey 12 classroom Gabaldon building built in School year 1988-1989 which was funded by the City Government, the two-storey 4-classroom NCR Building constructed in 1989 and the two-room DPWH building.
