School History

history1 history

The Comprehensive Schools for Ballymun were first planned in the late sixties. Initially two separate single-sex schools were envisaged and this idea finally developed into a co-institutional structure with a shared facilities area to accommodate 750 boys and girls up to Intermediate Certificate. The official opening took place on March 26th 1973.

Some years later another school building was built on the opposite side of the Ballymun Road to accommodate 500 boys and girls to Leaving Cert Level. At this time the original school divided into two separate single-sex schools. For the next 33 years the Comprehensive Schools in Ballymun were divided into:
The Girls’ Comprehensive School,
The Boys’ Comprehensive School and
The Senior Comprehensive School, each with its own separate teaching staff.

In September 2005, the three Comprehensive Schools amalgamated to form a single co-ed secondary school, under the new name of Trinity Comprehensive School. An extensive refurbishment of the old Boys’ and Girls’ Comprehensives was completed in 2005. The new school boasts state of the art facilities, incuding:

  • Five Science Labs
  • A Home Economics suite
  • Woodwork/Construction rooms
  • Metalwork/Engineering rooms
  • Professional stage
  • Two sports halls
  • Astro turf pitch
  • GAA and soccer pitches
  • Fully equipped gym
  • Music room
  • Parents’ room
  • four Computer rooms
  • 200 networked computers
  • Nurse’s station
  • Three Art rooms
  • Library with full time librarian
  • Learning Support rooms
  • Cafe BEST
  • Wheelchair accessible building


Trinity Comprehensive School was officially opened by the then Minister for Education and Science, Mrs Mary Hanafin.