Origin: Named after FLORA A. YLAGAN, known educator and founder of National Teachers College
- Annex of Quezon City High School in June 1970
- Housed at Pinyahan Elementary School’s makeshift buildings for 17 years
- Through City Resolution No. 949, s. 1973, independence was granted
- Several City Resolutions were enacted to enable the granting of the permanent site of the School. It happened on November 5, 1987.