The effects that admission criteria may have for under-represented groups are an important concern for programs seeking to improve access to post-secondary education. Using data from a large preservice teacher education program in the Canadian province of Ontario, we demonstrate two approaches to evaluating the effects of admission criteria. The first approach uses survival analysis to compare the effects of minimum admission criteria for determining the admissibility of applicants. The second approach compares the actual admission decisions with the decisions that would have been made using eight alternative sets of rules with varying emphases on academic preparation, ratings of applicants' essays and applicants' demographic information. Both approaches offer insights into the roles of specific admission criteria in addressing under-representation.