| Dimensions of analysis (Blocks of variables) | Independent variables |
| Socio-demographic characterization (Block 1)
| Sex: Male | Female |
| Age | |
| Social origins (Block 2)
| Socio-occupational categories (social classes) |
| entrepreneurs and executives | |
| professionals and managers | |
| self-employed | |
| routine employees | |
| industrial workers | |
| multi-active employees | |
| Years of schooling of father | |
| Years of schooling of mother | |
| Previous education (Block 3)
| Earlier failure (year repeated): Yes | No |
| Route of access to higher education | |
| general course | |
| technological course | |
| vocational course | |
| “second-chance” education | |
| Other | |
| Sector in secondary education: Public | Private (or cooperative) | |
| Characterization of training and educational institutions in HE (Block 4)
| Sector of educational institution: Public | Private (or cooperative) |
| Education subsystem: University | Polytechnic | |
| Field of study | |
| Education | |
| humanities and art social science, business and law | |
| science, mathematics, computing | |
| engineering, manufacturing, construction | |
| agriculture and Veterinary | |
| health and welfare | |
| Services | |
| Daily life indicators (Block 5)
| Average number of hours per week in class activities |
| Average number of hours per week studying | |
| Average number of hours per week working |