Is lárionad feabhais é, i bhforbairt iomlánaíoch agus i dteagasc gach dalta ar leith. Is duine speisialta gach aon duine acu. Saothraíonn foireann agus daltaí na scoile i dteanna a chéile, i dtimpeallacht shábháil chairdiúil d’fhonn buaic iomlán na ndaltaí uilig a chur i ngníomh. Cothaítear atmaisféar ina bhfuil ardmheas ar theagasc agus ar fhorbairt phearsanta. Cuirtear béim mhór ar chomhoibriú agus ar chomhmheas. Tá an Ghaeilge agus an cultúr Gaelach lárnach i ngach gné de shaol an choláiste.

Gaelcholáiste na Mara is an all-Irish Post-Primary college. All subjects (except other languages) are taught through the medium of Irish. Gaelcholáiste na Mara is inclusive in its intake and is comprehensive in its curriculum. It is a holistic centre of excellence in the development and learning of each individual pupil where each person is special. Staff and students work together to realise their full potential in a safe and friendly environment where the atmosphere is one of learning and development, mutual respect and co-operation. Irish language and culture are central in every aspect of the college’s life.