After the seven-year accrediting grant that was given to La Salle Green Hills in 1998, the school was surveyed on September 2005 and was granted a five-year accreditation. Accrediting visits in 19 were given seven-year accreditations making it the first and only high school in the Philippines to be granted two seven-year accreditations. After which, La Salle Green Hills was given a better five-year grant in 19 after two accrediting visits. La Salle Green Hills received three-year accreditations again in by 19. La Salle Green Hills was first accredited by the Philippine Accrediting Association of Schools, Colleges and Universities or PAASCU in 1971 and was given a three-year accrediting grant. The De La Salle Grade School – Manila was phased-out in 1984, after which its grade school graduates were given an option to study either at LSGH (for northern and central Metro Manila residents) or at De La Salle Zobel in Ayala Alabang Village (for southern Metro Manila residents). In 1968, when the De La Salle High School – Manila was made defunct, graduates of the De La Salle Grade School were transferred to the La Salle Green Hills High School, making La Salle Green Hills the high school of De La Salle University – Manila, until the establishment of the co-educational De La Salle-Santiago Zobel School in 1978. In August 1964, the high school was established. was registered as non-stock, non-profit corporation with the Securities and Exchange Commission. On August 24, 1960, La Salle Green Hills, Inc. Its first Brother-Director was Brother Alphonsus Bloemen FSC who first came to teach in De La Salle College in Manila in 1940. In July 1959, La Salle Green Hills (then spelled La Salle – Green Hills ) opened its door to two preschool-level sections and one section each for elementary school units one and two. Gabriel Connon FSC, acquired a six hectare lot on Ortigas Avenue in Mandaluyong to relocate the De La Salle Novitiate from Baguio and to accommodate increasing requests for admission to the then De La Salle Grade School on Taft Avenue, Manila. In the Early 1950s, the Brothers of De La Salle College-Manila led by Brother H. 3.6 Spiritual activities and development facilities.Both Grade School and High School departments of La Salle Green Hills were awarded Level III accreditation-the highest possible level-by the PAASCU and FAAP.
La Salle Green Hills was given a clean seven-year accreditation by the PAASCU in 19, thus making it the first high school institution in the Philippines with this distinction. La Salle in Bacolod (1952), and the La Salle Academy in Iligan (1958). It is a member of the De La Salle Philippines, the association of all Lasallian institutions in the Philippines, namely De La Salle University in Manila (1911), De La Salle Araneta University in Malabon (1946), University of St. La Salle Green Hills offers primary and secondary education. Gabriel Connon, FSC primarily to provide more slots to students wishing to avail of the then very popular De La Salle primary education offered in Taft Avenue, Manila. It was established in 1959 by the De La Salle Brothers led by Brother H. La Salle Green Hills (" LSGH") is a private Catholic school run by the Philippine District of the Institute of the Brothers of the Christian Schools in Ortigas Avenue, Mandaluyong, Metro Manila, Philippines.