Five schools from Spain, Italy, Germany, Belgium and Finland participate in the project aimed at 14-18 year-old students. The project focuses on increasing awareness about students’ sustainable action through an analysis of their consumer behaviour. An initial study of their own ecological footprint will be followed by the creation of CLIL materials, and the study and analysis of topics such as: reduction of CO2 emissions, shopping habits and packaging, sustainable energies, cloth recycling and sustainable farms, implementation of measures in the school community, etc.