St. Helen's Junior National School is a Catholic-ethos primary school in Portmarnock, Co. Dublin, founded in 1977. It is dedicated to providing a happy, inclusive, and safe learning environment for junior infants through second class. The school works in close partnership with parents, guardians, and the wider community to nurture the talents of every child, offering specialized support through autism classes and SET programs, while promoting holistic development through active school initiatives and wellbeing programs.