Factors Imp acting Educational Pathways Prepared by Mary Catharine Lennon, Huizi Zhao, Shunji Wang and Tomasz Gluszynski for the Higher Education Quality Council of Ontario Disclaimer: The opinions expressed in this research document are those of the authors and do not necessarily represent the views or official polices of the Higher Education Quality Council of Ontario or other agencies or organi [...] The restructuring of the Ontario high school curriculum and the sunset of the OAC program in 2002/03 created what is known as the “double cohort,” when two years of students graduated at the same time, having had different curriculum structures. [...] This high percentage of graduates may be the result of the OAC program having been phased out, since the 2000 3 –. Educational Pathways of Youth in Ontario: Factors Impacting Educational Pathways cohort would have been in Grade 12 in 2003, and those who would have graduated from OAC in 2004 under the old OAC program would also have graduated in 2003. [...] This number closely follows the national trends, as 94 per cent of students in the rest of Canada had graduated by the age of 21. [...] In all, 21 per cent of students from families with the lowest levels of education chose not to pursue any postsecondary education by the age of 21.