This article discusses the place that education and mediations among peers, schools and families have in "digital" learnings and media competencies of students aged 9 to 12 and 14 to 16 based on an interinstitutional study conducted at 6 Brazilian universities. The work was conducted in association with an international network of researchers who investigate the theme of media competencies for citizenship. The broader study, which had a qualitative and quantitative approach, involved different dimensions of media competencies among children, youth, university students, teachers and communicators, this article emphasizes the role of education in different sociocultural contexts in the construction of media competencies among young students. The article locates some foundations of education including, learning, mediation, media literacies and the methodological aspects. In the discussion about some aspects of education received or not by the students, the article reveals the place of self-learning, of learning with friends, of school and family mediation, and of education in workshops. Finally, it highlights some challenges for education understood as educational mediation for the promotion of mediatic and cultural experiences responsible from a semiotic, expressive/aesthetic and ethical perspective in and outside schools.
