A Commission of Inquiry on Canadian University Education recently reported that approximately 42% of full-time undergraduate students who entered Canadian universities in 1985 failed to obtain a degree within five years. While this statistic is startling, perhaps, of greater concern is the apparent lack of interest shown by most Canadian universities in the subject of undergraduate student attrition. As an initial step toward addressing the issue of Canadian university attrition, a conceptual model of undergraduate student withdrawal is proposed. The model is based on the assumption that students are characterized by a wide range of personal and academic variables. Such characteristics interact or co-exist with institutional variables such ...