Grade School Main Building

It houses the school's Grade School Sector classrooms and has a covered Basketball court at its rooftop. All Classrooms of the school are air-conditioned.

 Grade School Annex

It houses some of the Grade School Classrooms and the Grade School Computer Laboratories. It also has a covered court at its rooftop. The Grade School Library is situated at the 2nd floor of the building.

 High School Main

It houses the High School classrooms for the 2nd to 4th Year levels. It also houses the High School Speech Laboratories, Electricity Laboratory and Electronics Laboratory. This is also where you can find the Rev. Fr. William P. Mc Grath, OMI Auditorium, the 400-seater auditorium of the school; and the High School Library, which is in the Mezzanine of the 3rd floor of the building.

 High School S&T Building

It houses all the 4 Science Laboratories and 2 Computer Laboratories of the High School Sector. It also houses the classrooms of the Freshman level.

 DMSTC Building

It houses the school's vocational institution, the De Mazenod Skills and Training Center, which offer vocational and technical courses, from Automotives, to Computer Secretarial. It also houses some of the Home Economics Labs of the school.

Gymnasium

It is were you can find the school's modern gymnasium, equipped with the latest sports equipment comparable to that of Philippines' leading universities.

Kinder School Building

This building houses the Kinder School Dept. of the school. The Audio Visual, headed by Ms. Magbanua, is now located at the Kinder School Building.

 School Chapel

The School Chapel is located at the ground floor near the high school sector. It is used when there's a Class Mass and now also used as a Recollection place.

Computer Laboratories

There are 5 computer laboratories throughout the school. They are connected using 2 Mbit/s DSL connection and Windows XP computers