Three countries of the consortium (France, Luxembourg, Spain) are implementing local and multi-professional teams schools to set up measures addressing emerging difficulties at an early stage. Promoting the development of those teams appears to be one of the keys of successful strategies to reduce early school leaving (ESL). Therefore it is necessary to follow the experiments, analyse the difficulties, the levers of success and the impact of teamwork to reduce ESL and widespread the results of analyses, good practices and recommendations. In order to work on ESL with other professionals and to set up student-centred measures, education staff needs to understand ESL and to develop or strengthen special skills. In this project, a scientific and comprehensive database on ESL will be created and summaries will be written for the local teams and their partners in an "easy to read" format. Local programs to support and train multi professional teams will be experimented and analysed with researchers and European trainers. The project aims at creating and testing tools for trainers who will have to work on professional development of education staff. Europeans trainers will be associated at the analysis and at the production of the created tools.All the analysis, tools and results will be available on a website dedicated to the project. The output of the project will be: - a report on comprehensive evaluation of the multi partnership teams - an international literature review on research and main data on ESL - a mapping of researchers and European experts on ESL - a platform of videos analysing the real activity of the multi partnership teams to be used to train the members of those teams. - a web site updated throughout the duration of the project - meetings opened to all European trainers who will contribute to disseminate preliminary results and enrich the analysis and tools.