This article presents a collaborative research based on the cooperation of teachers, students and searchers gathered around a narrative workshop project in an experimental school, the Micro-Lycée de Sénart, near Paris. Searchers and practitioners built together this workshop dedicated to drop out students to analyse how it can help them to develop themselves, their social skills and their creativity to face life issues. The research team also wants to see if this kind of professional activity can change the teachers’ representations, (...) behaviours and practical experience. The research team used the frame of biographical research in education as theoretic background and methodology. The purpose of this article is to point out interests and limits of such an approach in the collaborative research field. (shrink)