It was established in 1959 by the De La Salle Brothers led by Brother H. 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.

[7] La Salle Green Hills was given a clean seven-year accreditation by the PAASCU in 1991 and 1998, thus making it the first high school institution in the Philippines with this distinction.

In the Early 1950s, the Brothers of De La Salle College-Manila led by Brother H. 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.

Its first Brother-Director was Brother Alphonsus Bloemen FSC who first came to teach in De La Salle College in Manila in 1940.

On August 24, 1960, La Salle Green Hills, Inc. was registered as non-stock, non-profit corporation with the Securities and Exchange Commission.

Its facilities and classrooms are located within the St. Joseph the Worker Building (Kindergarten and Grade 1), St.

[14] The curriculum for the LSGH-GS focuses on basic elementary education, in which Language (English), Filipino, Christian Living, Science, Art, Music, Computer, and Arithmetic are introduced in Kindergarten 1 and 2.

Language Arts, Science, Filipino, Music, Christian Living, Reading, Mathematics, Araling Panlipunan (Grade 2–6).

[17] The curriculum of the LSGH-HS focuses mainly on college preparatory education in which English (Grammar, Literature, Rhetoric and Reading), Mathematics, Science, Social Science, Christian Living, and Filipino make up the academic subjects while Arts and Technology (includes Electronics, Home Management, Basic Accounting, Music, Drafting, Integrated Arts, Culinary Arts and Automotive), Computer, and Physical Education and Health, and Robotics make up the co-curricular subjects which are all taught from Grade 7 to Grade 10.

[21] The school is situated on a six-hectare campus fronting Ortigas Avenue, across from Wack-Wack Village and golf course.

Aside from sports, the main gym area is also used for graduations, community masses, concerts, and other events.

[25] The 3rd floor of the St. La Salle Building houses one of the four campuses of the De La Salle University Manila Ramon V. del Rosario Sr. Graduate School of Business, of which LSGH is designated as the "Ortigas Campus".

[26] The Brother Arnold Reche FSC Building houses the Senior High School (Grades 11 and 12) Department's classrooms.

The basement floor of the building accommodates the SPDO, SC, The Archives, the conference room, and the Table Tennis courts.

It has orchestra and balcony sections which can accommodate 628 persons and its newly installed lighting and sound systems make it the best-equipped medium-sized performing arts venue within the San Juan and Mandaluyong–Ortigas area.

La Salle Green Hills also has a full-sized football field, named after Brother Gilbert Cotter FSC, an American De La Salle Brother who used to handle LSGH and was closely tied to football.

It is designed to suit a wide range of sports activities (e.g., basketball, volleyball, tennis, etc.)

[31] Other facilities situated in the Upper Field include the Track Oval, Baseball Diamond, Lawn Tennis Court, Swimming pool, Wall climbing facility, Table Tennis room and a Golf Driving Cage.

It has the same services as the Annex Library but also includes the Leisure Reading area where comics and digests can be found.

The GHArchives (Green Hills Archives) and the HS Audio – Visual Center, and ANHS collection are also housed in this library.

[c] The two-story building has identical facilities on both floors: Conference room which can be converted to a chapel, dining hall, kitchen, dormitory, showers, and lavatories.

LSGH holds plays, concerts and activity days in each grade level (where students recite short stories and poems, and give speeches in English and Filipino).

Rafael Donato Center for the Performing Arts, or in the old St. Joseph's Auditorium (the name of the Bro.

The Kundirana name is a combination of 2 forms of traditional Filipino music the Kundiman, and the Harana.

The group celebrated its 40th anniversary in November 2011 with a grand reunion concert held at CCP led by Ogie Alcasid entitled: KUNDIRANA KWARENTA NA: the men, the music, the ministry featuring several alumni, and the then-current batch, Kundirana 2012.

The Forensics Guild used the then Saint Joseph's Auditorium while the Debate Club used the High School's Maria Pilapil Hall.

[citation needed] (This was the stage where LSGH alumnus, Hilarion "Ronnie" Henares III, won the prestigious competition in 1967[48] and where another alumnus, Christian Earl Castañeda, was second runner-up in 2009[49]) However, since SY 2008–2009, LSGH's Student Affairs Central Body took over participation in this contest.

The team has autonomy from rules of normal clubs and societies in LSGH and is officially under the Principal's Office, rather than under the Student Activities Coordinator.

[52] The LSDT has gone on to be Quarter-finalists at the 2008 National Asians High School Debate Championship[53] won the Ana Alano Cup at the 2008 and 2012 Philippine Schools Debate Championship and semi finalist in the same tournament in 2009 and 2010, and quarter-finalist in 2011 as well as advanced to the semi-finals of the Asian Schools Debate Championship Under the tutelage of Sir Cortez, Lasallians participated in the IHBB (International History Varsity Bee and Bowl Competitions) winning several awards and maintaining a first place for both the Bee and Bowl across the Middle school to Junior Varsity categories.

[54] The LSGH Adult Night High School (ANHS) has a history dating back to the mid-1970s when it was established by the Christian Brothers to provide tuition-free, quality Lasallian education to the marginalized.