The School of Information Management (SIM) was created as the School of Library Service (SLS) in 1969. The first MLS (Master of Library Service) degree was awarded at Dalhousie University’s May 1971 Convocation.

From 1979 to 1985 the School undertook a complete revision of its curriculum, which was then implemented over two academic years from fall 1985 to winter 1987. At the end of the revision process the name of the school and the degree offered were changed to reflect the new curriculum with its integration of librarianship and information studies. The school became the School of Library and Information Studies, and the first Master of Library and Information Studies degrees were awarded in May 1987.

The program has been continuously accredited, as the MLS then the MLIS, since 1971.