This paper is the result of the research “Education and religion: violence and peace” which tracked and analyzed the concepts that young people between 14 and 19 years who live in the region of Eastern Antioquia called Altiplano, about religion, teaching that they receive in their classes on respect for religious freedom, and how the class of religious education contributes or not to build peace in a region that has been marked by violence of all kinds, and preparing for the post-conflict Colombian experience. The research aims to approach this reality and analyze it to reach conclusions that open the possibility of intervening in it from education, especially from the area of ERE and thus promote peace tools for availing ourselves of post-conflict context looming in Colombia.