Instituto Teológico San Ildefonso is an esteemed academic institution under the Archdiocese of Toledo, dedicated to the formation and research in Theology and Ecclesiastical Sciences. Its primary objective is to provide theological education to candidates for the priesthood, members of religious institutes, and laypeople engaged in evangelization. The institute offers a comprehensive academic curriculum that includes undergraduate and master's degree programs in Theology, covering specializations such as the History of the Church and Fundamental Theology.

In addition to its theological offerings, Instituto San Ildefonso features the Instituto Superior de Ciencias Religiosas "Santa María de Toledo," which provides advanced training for religion teachers, permanent deacons, and committed laypersons. The institution is deeply committed to fostering a vibrant faith community in communion with the Church. Its resources also include publication services and a well-equipped library, making it a pivotal hub for theological scholarship and ministerial preparation.