The institute offers a number of graduate degrees in theology and ministry, including a Master of Arts in Theology (M.A.), a Master of Divinity (M.Div.), and a Master of Arts in Pastoral Studies (MAPS).
1912 - The Master General of the Dominican Order makes the House of Studies a Studium Generale. He also formally establishes the Central Province of St. Albert the Great, and the school is intended primarily to prepare the province's members for priesthood. The Studium Generale operates from 1939 to 1951.
1923 - The Studium faculty moves to the campus of the Dominican College of St. Rose of Lima in Dubuque, Iowa, and experiences a period of rapid change.
1956 - The two Dominican colleges, St. Rose of Lima and the Studium Generale, are incorporated as one, the Aquinas Institute of Philosophy and Theology.
1981 - Aquinas Institute of Theology moves to St. Louis, Missouri, where it enters into a "Cooperative Project for Theological Education" with Saint Louis University, on whose campus it resides. During that time, the school inaugurates the Great Preacher Award (awarded to an outstanding homilist in the St. Louis area), the Catherine of Siena Excellence in Ministry Award (awarded to a layman who has contributed through ministerial work), and the annual Aquinas Lecture (given by leading theologians on current topics in theology). The Dubuque campus is sold to Emmaus Bible College.
2005 - The school moves again, this time to a former factory in Midtown St. Louis, built in 1903 to house the Standard Adding Machine Company, which prospered with the invention of a 10-key adding machine. The renovation of the building was part of a larger urban renovation project which includes residential and commercial space.