Mount St. Mary's Seminary & School of Theology (MTSM) is the Archdiocese of Cincinnati’s graduate-level Catholic Seminary and School of Theology with nearly 200 full and part-time students. Founded in 1829, our 75-acre campus provides preparation for ordination to the priesthood and permanent diaconate as part of Mount St. Mary’s Seminary. In addition, our School of Theology offers classes for graduate, non-degree and certification programs for laity, clergy and religious.