 UniSA is among the world's top universities, ranked in the World's Top 50 Under 50 by both the Quacarelli Symonds (QS) World University Ranking (#25) and Times Higher Education (THE) (#26).It has two Adelaide city centre campuses, two Adelaide metropolitan campuses, and two South Australian regional campuses.UniSA was formed in 1991 by the merger of the South Australian Institute of Technology with three South Australian College of Advanced Education campuses.