This study deals with the issue of eco-citizenship and therefore environmental education with students around two examples: the Erika oil spill in 1999 on French beaches and the wolf. The approach is based on the experience of two high school classes and to develop a project pedagogy leading the student to immerse himself in the field of the wolf and the oil spill, to make him question himself in order to develop a reflection on his relationship to the environment, an eco-attitude with daily eco-actions to be developed within the framework of a daily eco-citizenship. The aim of this survey is addressed to all the professionals of the pedagogy, teachers but also to all the professionals of the environment who are in charge of programs of teaching and education to the environment (CPIE...), to all the parents and students, children and teenagers who want to question themselves on new alternative practices in term of environment, of eco-actions in the line of an eco-attitude to be developed throughout their life.