This paper presents the results of a critical ethnography of literacy practices experienced by a group of university students, who perceived them as promoting social exclusion in the Colombian educational system. It also gives an account of their views about how this educational system could be more inclusive and contribute to peacebuilding in the country. Inspired by Paulo Freire's understanding of literacy and Hannah Arendt's political theory, the meaning reconstructive analysis of 46 stories reveals a thematic universe composed of three main categories: understandings of social exclusion from schooling experiences, types of social exclusion as lived in schooling, and social exclusion-related factors of literacy practices. Based on two discussion groups, and an analysis in the light of the theory of practice architectures, it is argued and empirically substantiated that ethical literacy, as a way of being-with-others, is a practice that must be at the core of an education for peace.