To date, the majority of research examining youth in post-secondary education has focused on access. The results presented in this chapter extend the understanding of the post-secondary education process in several ways. First, access to university and college are examined with respect to a number of key background characteristics, including performance in PISA 2000. Persistence in post-secondary education is also analysed, as well as factors associated with course choice. The use of the same background characteristics across the three outcomes of access, persistence and choice in field of study paints a complex and nuanced picture of the trajectories of the youth who participated in PISA and YITS. The evidence described here highlights that access, persistence and field of study in postsecondary education (university, in particular) are closely related to higher PISA achievement and particular background characteristics.