This paper reports findings from the first national Australian study of the predictive validity of the Special Tertiary Admissions Test (STAT). Background on tertiary admissions procedures in Australia is presented, followed by information on STAT and the research methods. The results affirm that STAT, through the provision of baseline and objective data, offers a valid and efficient means for ensuring that people who are capable of success at university are able to gain admission. They affirm the importance of taking an evidence-based disciplinary perspective to university admissions. Implications for the development and use of the assessment are considered. (Contains 5 tables.)