The Agrupamento de Escolas Rodrigues de Freitas, integrated into the heart of the city of Porto, is a cluster within the TEIP program, Priority Intervention Educational Areas, attended by students from preschool to 12th grade. It is a goal to train conscious and responsible citizens. In order to increase environmental literacy and train conscious and active young people with regard to the environment, the school participates in the Eco-Escolas project, and particularly in the “O Ar que eu respiro” project. With this project, young people got to know the main air pollutants, which affect air quality and their health. The measures to be taken to minimise exposure to polluted air and promote good habits to reduce emissions of these pollutants and achieve good air.