Castleville Study Centre provides study facilities, cultural activities and educational activities for university students and senior-cycle second-level students. It offers a focus for academic life and an environment that encourages students to get the most out of their years in university, and education generally.

Castleville is an initiative of Brosna Educational Centres CLG, a registered charity for the advancement of education and character development in accordance with Christian principles and ideals.

Spiritual activities at Castleville are entrusted to Opus Dei, a Personal Prelature of the Catholic Church.