Coláiste an Phiarsaigh is an Irish-language secondary school dedicated to the holistic development of its students. Its mission focuses on fostering personal, social, educational, and professional growth, preparing students to be responsible and participating members of society. The school places a central emphasis on the promotion of the Irish language and culture, both within the classroom and through extracurricular activities, aiming to serve the youth of the local area in a welcoming, Irish-speaking environment.