Founded by the Holy Ghost Order (Spiritans) in 1890, St Mary’s College Senior School has 450 boys, with a tight-knit sense of community and shared values. We are a small school where everybody knows everybody else, an academic school in which students are expected to go to Third Level, a sporting school with a noted tradition, a missionary school with strong links to the developing world.

School Notices

126th Academic Year

St. Mary's Deputy Principal

Deputy Principal Mr Brian Moore has been appointed Principal of Rathdown School. He will take up the role before the new term in September.

The role has been publicly advertised. An application form is here.

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