The Ateneo de Manila University Professional Schools was formerly known as the Ateneo Graduate School during its Padre Faura days. It consisted of the Law School and Graduate School of Business. In 1977, AGS moved to Salcedo Village, Makati City. It is here where it changed its school name to the Ateneo Professional Schools (APS). The Library as an integrated but independent unit of the APS, adopted the name: The Ateneo Professional Schools Library (APSL) to complete its acculturation. Now the APSL, is well entrenched at the Rockwell Center. In fact, the library was the very first unit to transfer in November 1998 and operate in December 1998. Father Robert J. Suchan, S.J., a professional librarian was appointed director in 1959. He became the Director of Libraries. In 1980, Mr. Rogelio B. Mallilin became director. He was the Library Director of the Rizal Library and Business/Law Library until 1985. The Business/Law Library became Ateneo Professional Schools Library and appointed a new head, Mrs. Teresita C. Moran in June 1985. Mrs. Teresita C. Moran served as APS Chief Librarian until June 30, 2011.
The APS Library supports academic programs of three Professional Schools: Ateneo Graduate School of Business, Ateneo Law School and Ateneo School of Government through library instruction, collection, development, technological application, and efficient services which enable students and faculty to access effectively recorded knowledge and information resources. This library support empowers the users to develop the information and technological competencies necessary to achieve their educational, research and professional goals, succeed in the workforce, apply lifelong learning skills and participate in a diverse society as a man for others.
The APS Library is basically a teaching and research unit. It supports the teaching learning process of the three schools it serves. Its primary purpose is two fold: first, to support and enhance the educational and research endeavors of the three professional schools it serves. Second, it recognizes its obligation to support the intellectual effort of groups of scholars, students and others outside the immediate University community in view of its purpose and capabilities nationally and internationally.