About Mount Sackville Secondary School
Mount Sackville Secondary School is an english-medium post-primary school in Chapelizod, County Dublin. The latest official 2025/26 return records 636 pupils. The school is listed with a catholic ethos. Use the key facts, location and contact sections on this page to compare the school and contact it directly about admissions, places and current programmes.
School resources
The school has not supplied a current curriculum link.
School events
School events
August 2026
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No published events are listed for this month yet.
Source and verification
Department of Education and Youth school directory 2025/26 · Last checked 4 August 2026