The Population and Housing Census is an exhaustive source of information on the education level of the population; it offers an accurate snapshot allowing, at the same time, an analysis by strata difficult for a survey. This is the case of the population who, without being necessarily students, studied Vocational and Complementary Training. The series of rates of the population with secondary studies by age stratum and sex come from the conjunctural operation Survey on the Population in Relation to Activity (PRA) and constitutes a structural indicator with a high degree of comparability in the European statistics framework.