On 15 July 1904, the university was founded by American Augustinian priests along with a few Filipino and Spanish friars from Spain belonging to the Province of the Most Holy Name of Jesus of the Philippines with assistance from their confreres from the Augustinian U.S. Province of St. Thomas of Villanova. It began as a preparatory school for boys during the American colonial period. On 12 December 1912, it was granted government recognition for its various course offerings. Later on 5 February 1917, it was formally incorporated under the name Colegio de San Agustín de Iloilo. In 1928, one of the country's oldest campus publications, "The Augustinian Mirror", was established, producing some of the country's well-known writers. The 1930s saw rapid growth with the opening of three colleges in quick succession: College of Liberal Arts in 1935, College of Commerce in 1936 and College of Law in 1937. In 1940, the college began admitting female students.