This book is the result of the research project that led to the final work of the Master's Degree in Education at the National University of Quilmes. This work begins with the observation of the walls of the classrooms of five schools in the east of the province of Mendoza (Argentina) that have the particularity that in the same building, at different times of the day, they share different levels of schooling: primary and secondary. Usually in most of the schools we visited we can observe that their walls display posters, writings, sheets, images, graffiti. Many of these visual productions...