Data collected throughout the survey according to the formal organization of their transi- allowed us to perform a first analysis of significant tions and the pathways between the various levels transitions between secondary and postsecondary of education. [...] The empirical definition of tics of the YITS and the variables used in analyzing 2 EDuCATIoNAL PAThwAyS AND TrANSITIoN MoDES IN CANADIAN PoSTSECoNDAry EDuCATIoN and operationalizing educational situations and of educational situations reported by each survey pathways. [...] This approach brings Before adopting the notion of trajectory, Bourdieu out the complexity of the individual’s educational and Passeron (1970) used the concept of the carrière stages while highlighting the evolving differences scolaire [“educational career”], which they identified between social groups within the education system. [...] The authors examined fac- good marks in high school and no signs of risky tors that contributed to the development of aspirations behaviour all reduced the probability of dropping to enter university, as declared at the ages of 15 and 17, out. [...] Considerations From the start, the Transitions project was intended the imprecise nature of the educational variables as a secondary analysis of data produced by previ- in certain parts of the YITS did not enable a clear ously completed qualitative and quantitative studies reconstruction of the sequence of educational events as well as from other sources, such as administrative between January 200