Charles lived in a time when the Church suffered great and many scandals, of which ill-trained clergy caused most. He addressed the problem by formulating a model for seminary formation of the clergy. The seminary of the Archdiocese of Manila (Philippines) is named after St. Charles Borromeo; a fitting reminder not only of the valuable contribution of the saint to the training of priests but also of the perennial need for clergy who are spiritually adept, morally upright, intellectually competent, and zealously engaged in the apostolic mission of the Church.
Inaakala po ng karamihan, ang Basilika ni San Pedro sa Vatican ang opisyal na simbahan ng Santo Papa. Mali po. Ang tahanan ng Santo Papa ay nasa Vatican, ngunit ang kanyang opisyal na simbahan ay ang Basilika ni San Juan sa Lateran sapagkat ang Santo Papa ay obispo rin ng Diyosesis ng Roma. Sapagkat ang obispo ng Roma ay siya ring Santo Papa, ang kanyang katedral, ang Basilika sa Lateran ay may pinagkalooban ng napakadakilang pamagat: "Sacrosancta Lateranensis ecclesia omnium urbis et orbis ecclesiarum mater et caput" o, sa wikang Ingles, "Most Holy Lateran Church, of all the churches in the city and the world, the mother and head".