The relationship between the right to education and the freedom of thought, conscience and religion has always been a complex aspect. This is particularly true with reference to the Irish school system. Indeed, the latter is characterized by the relevant role entrusted to the Catholic Church. The essay aims at analysing the problems concerning the protection of the students’ freedom of religion which affect the educational system in Ireland. A particular focus will be devoted to two key aspects, namely the school admission policy and the role of religious teaching within the curricula.