A system enabling the school integration of traveller children has gradually been set up in a département of Southern France, starting from an experiment with teaching from a school-truck. The system, which is close to official recommendations for such set-ups, provides a complement to school integration within the normal school system, in the form of daily academic support for students who have fallen behind or who have difficulties learning basic skills. Even though at the level of the Académie (regional school oversight division) the implementation of this system in different schools has been conceived of as homogeneous with the overall organisation of education, in reality it depends on the commitment it arouses among school principals and teachers. Two areas where the regulation of teaching occurs are focused upon here. First of all, the Académie, where the definition of the contribution of the different participants, whether institutional or external as members of charities or other groups, contributes to the design of the system. Then, the classrooms, where its implementation differs according to the modalities of co-intervention worked out between the school personnel and whoever will be dispensing academic support.