The Past Pupils Union (PPU) supports and promotes the school community and acts as a connection between past pupils and the school. The PPU hosts a number of events each year.
- The Annual PPU Dinner (every November)
- The PPU Golf Outing (every Summer).
- The PPU Awards are given each year to students who have been successful both academically and in extra-curricular activities.
- The PPU helps to raise awareness around special commemoration events of past pupils and other historical events.
Current President: Mr. P Moynihan (Head of Corporate and International Affairs at Cork City Council)
A Triumvirate of North Mon Heroes
- Poet Caoimhín Mac Unfraidh a poem
- Commissioned by Brother G. D. de Barra
- Artist Eve Parnell
- Produced by Barry Hill, North Mon P.P.U.