This article reports the results of an exploratory, qualitative inquiry into the construction of the perception of social inclusion and/or exclusion in school and school-age youth. For this purpose, interviews were conducted with various social science specialists. This work made it possible to obtain clarifications regarding the relational, contextual and temporal aspects of the concept of social inclusion and/or exclusion. It also showed the need to look at school not as a space that excludes in itself, since most young people participate in school, but rather as part of a broader system, a social system that excludes or includes, a social system that fosters expectations regarding life paths, but does not necessarily generate the opportunities to achieve these expectations.