was appointed as principal until 1995. In 1996-1997 repainting of the classrooms in the old building, Guidance Center, and Faculty Room were relocated. MAPSA visitation for evaluation was "Favorable". Purchase of lot for the High School Department due to parents' demand. In 1998–1999, Employees Salary scheme was based on a merit system. Kindergarten 1 started using the new Gabrielan uniform with the intention of gradual implementation until all students/pupils are using the said uniform. SGA launched its very first publication the "Gabrielan" and the realization of the launching of the Yearbook. There was a stage presentation entitled "The Wizard of Oz". In this year was the completion of requirements for the application of the High School Department and opened with 104 students. SGA managed to address the challenges of the new millennium that 1999-2000 was made significantly with the opening of the High School Department. It was during the time of Fr. Nestor Gungon and Sr. Mary Angelina Rojas, SPC, when the high school department began its operation. While Sr. Angelina was the grade school principal, Fr. Nestie on the other hand was both the school director and H.S. principal. In the second year of operation of the high school, Fr. Nestie was succeeded by Msgr. Wilfredo Paguio. During S.Y. 2001–2002, Sr. Mary Glyceria Navarro, SPC became the principal for both the grade school and high school departments. It was during the incumbency of Sr. Glyceria where SGA acquired facilities. These include the function hall, Bio-Chem, Physics, T.H.E., and Speech Laboratory. Msgr. Paguio, after a two-year term was succeeded by Rev. Fr. Alex V. Amandy who assumed office as a school director, effective April 1, 2002. Fr. Alex effected renovations of the physical plant, which lead to the completion of the high school building into five-story edifice with its gymnasium on the 5th floor. In 2003 St. Gabriel Academy automatically became a member of the Kalookan Diocese Schools Association (KADSA) but still a part of the Manila Archdiocesan and Parochial Schools Association (MAPSA). In 2005 SGA achieved the Education Service Contracting (ESC) Certification and the Gabrielan ESC grantees are assured of financial assistance throughout junior high school. SGA is an ESC/FAPE Certified School. During 2016–2017, the Sisters of the St. Paul of Chartres handed on St. Gabriel Academy to the Diocese of Kalookan. Its full administration under the tutelage of the Pablo Virgilio S. David, D.D. as the second Bishop