Postsecondary Education Participation of Under- Represented Groups in Ontario: Evidence from the SLID Data Huizi Zhao, Higher Education Quality Council of Ontario Postsecondary Education Participation of Under-Represented Groups in Ontario: Evidence from the SLID Data Published by The Higher Education Quality Council of Ontario 1, Yonge Street, Suite 2402 Toronto, ON Canada, M5E 1E5 Phone:. [...] The longitudinal aspects of the YITS and the SLID allow researchers to examine the impact of belonging to each of the under-represented groups on subsequent PSE outcomes. [...] In addition, the university participation rate of youth in the highest income quartile families is nearly twice that for youth in the lowest quartile. [...] The reason for the different definitions is to check the robustness of the family income effect Higher Education Quality Council of Ontario. [...] The outcome variables in the two models presented are participation in university and college and the independent variables are students’ characteristics as listed in the summary statistics in Tables 4 and 5. All of the regression results (coefficients) presented in the tables below are marginal effects.