Our Lady's Secondary School is a co-educational voluntary Catholic secondary school in Belmullet, Erris, under the trusteeship of CEIST. Established in 1943, the school is dedicated to holistic development, academic excellence, and fostering a strong community connection. It supports students through mainstream education, specialized ASD classes, and a bilingual environment, while actively engaging with local agencies, parents, and community groups to promote student leadership and wellbeing.