St. Gabriel Academy, Caloocan, also referred to as SGA or SGA Caloocan, is a Catholic Diocesan school in Caloocan, under the Diocese of Kalookan. It was established in 1968. Jaime Cardinal Sin commissioned the Sisters of St. Paul of Chartres to administer the school from 1968 until 2016 when the SPC Sisters handed on to the Diocese of Kalookan. Its full administration under the tutelage of Pablo Virgilio S. David, D.D. as the second Bishop of Diocese of Kalookan. History St. Gabriel Academy is a parochial school under the Diocese of Kalookan founded by Msgr. Pacifico Mendoza, who saw the need to educate the children in his parish. In 1968-69 the school began its operation under the headship of Sr. Marie Lorraine, M.M. then the principal of St. James Academy, Malabon. It was agreed upon that all graduates of the St. Gabriel Academy would continue their secondary education at the St. James Academy. With the transfer of Msgr. Pacifico Mendoza, Fr. Alfredo Santos took over the directorship until 1979. He was followed by Rev. Fr. Norberto Habos in which events turned out significantly when Jaime Cardinal Sin commissioned the Sisters of St. Paul of Chartres to administer the school. This call to mission was immediately responded to by the SPC Sisters through Mother Marie dela Croix, SPC, appointing Sr. Fideliza Portillo, SPC as the first principal in the year 1979–1980. She was replaced by Sr. Mary Glyceria Navarro, SPC who served the school in the year 1980–1981. The turn of administration gained a succession until eventually the first SPC community was established in the year 1981–1982. Sr. Jacinta de Marie Quindo, SPC was the Sister Superior and at the same time the principal for nine years from 1981 to 1990 inclusive. In 1985-1989 classrooms were built for the Elementary Department, and the school clinic and dental facilities were remodelled. An increase in student population was observed for in 1987-1988 rises to 7%, 1988-1989 13.5%, and 1989-1990 8%. Grades V and VI had the morning and afternoon sessions to accommodate transfers. Double single session classes were implemented at all levels due to a great increase in population. In 1990-1992 was the peak of the student population in the Grade School Department with a total of 2,999 enrollees. Sr. Blandine Jamias, SPC became the principal with Sr. Milagros Ycasas, SPC, as the Local Superior. The following school year, Sr. Edna Lopez, SPC,