Post-Secondary Education (PSE) in Ontario and in Canada has expanded on both the demand and supply sides in the last couple of decades. As of 2007, 50% of the population aged 18 to 24 was enrolled in post-secondary institutions. Enrolment in Ontario universities grew from 10,000 in 1960 to approximately 400,000 in 2007 (Clark, Moran, Skolnik, & Trick, (2009). The federal and provincial governments have pushed institutions to increase their capacity, especially at the university level, because of the belief that knowledge is a means of power and economic stability. On the demand side, Canadians understand and are aware of the advantages that PSE offers. Canadians believe that PSE, especially university, will provide their children with higher wages, economic stability, and secure job employment. Considering the importance of PSE, the questions that naturally arise are who has access to PSE and should this access be equal for all Canadian citizens? In this paper, the author proposes to identify the various barriers to access to PSE and to argue that financial constraints, cultural background, and academic achievements are the main determinants in attending PSE. (Contains 2 tables and 1 endnote.)