International audienceSince 2000, in France, policies do not hesitate to strengthen actions against school dropout and increase institutional prescriptions (orders, circulars, repository of professional skills, re-entry circular…) inviting professionals to implement specific measures focused on prevention, academic remediation, successful orientation. To meet these requirements, professionals mobilize and engage in the design of mechanisms to support and to support students at risk of dropping out or breaking professional. The operationalization of these devices generate organizations and new collaborations between different education stakeholders as part of educational alliances that co-education or professional alternately. Three lines of...