Saint Charles Preparatory School is a four-year Catholic college preparatory school in Columbus, Ohio, USA. It was founded in 1923 by the fourth Bishop of Columbus, James J. Hartley, as a Roman Catholic college seminary and high school. Today, it is an all-male high school serving the Roman Catholic Diocese of Columbus.The school's patron is Saint Charles Borromeo, and its motto, inscribed above the front door, is Euntes Ergo Docete Omnes Gentes, a quote from the Gospel of Matthew in the Latin Vulgate: "Going out, therefore, teach all nations." The original nickname of Saint Charles students is "Carolians", derived from the Latin word "Carolus," which means "Charles.") In 1947, the students also began to refer to themselves as "Cardinals." The Saint Charles sports mascot is Charlie the Cardinal.Founding and constructionThe school was founded in 1923 by Bishop James J. Hartley. The first classes were held at Sacred Heart School, an all-girls Catholic school, while the main school building was being built. In 1925, construction of the main school building was completed and classes were held there.1931 saw the completion of St. Charles' gymnasium and the Our Lady Lourdes Grotto. Major renovations were made to the gym in 1951 to more than double the capacity.A Gaelic-style chapel (called the "Lower Chapel") was added on to the east side of the school in 1937. Bishop Hartley dedicated the chapel to Mother of Mercy. A Milwaukee art company beautified the chapel with artwork in 1952.