This dissertation intends analyze experiments and the teaching practices initiated with the exhibition of movies on the schools in prisons on Rio de Janeiro, Brazil, presenting a reflection on the place occupied in teaching practice for such activities, as well as the way the students understand such experiences and how that practices are put in place in an environment of deprivation of liberty and security prioritization in that coexist daily goals often antagonistic, such punish and educate. As it demanded immersion in the research field, this work is of ethnographic kind, which explains why the field notes have place among the analysis of the interviews. The movies exhibitions were registered and interviews were conducted with teachers and students of the prison education programs after the movies exhibition. Moreover, data from the correctional system are presented and it works together to verify how much the Rio de Janeiro s State is investing to guarantee the right to education. This is an academic work about educational practices in environments of deprivation of liberty therefore is possible which this work will contribute to discussions regarding the value of the teaching practices to constructing an education to the freedom.