The Universidad Iberoamericana is a Jesuit-run university with main campus in Mexico City. It is the flag-ship institution of a network of universities that the Instituto Tecnológico de Estudios Superiores de Occidente. They are loosely connected, because of the role of the Jesuits with institutions going back to the colonial era, like the Colegio de San Ildefonso (which later became the Prep School for the National Autonomous University of Mexico), and the Colegio Máximo de Cristo Rey.