Gairmscoil Mhic Diarmada is a bilingual secondary school on Árainn Mhór Island, operating under the Donegal Education and Training Board. Established in 1990, the school provides a comprehensive curriculum including Junior Cycle, Leaving Certificate, and Transition Year programs. It plays a vital role in the cultural life of the island, actively promoting the Irish language and fostering a supportive environment for student development.