We are planning an Erasmus+ Project to face the different aspects involved in our Schools ecological footprint: water, pollution, one use plastic, clothes and cosmetics, food... The point of view of our work will be the Service Learning methodology, so to make a complete pupil-centred project in wich classes involved will choose an aspectand study it from different subjects and perspectives to prepare then a campaign for their own school and theother schools involved in the project. We are a group of six schools from another larger eTwinning group, Sustainable development. Three of us from the North of Europe and three from the South, so with different characteristics and experiences to share. students will be 15-16 years old.