Many Quebec students with learning difficulties and disabilities require support to maximize their school attendance. It is for this reason that Quebec has developed special education services and different mechanisms corresponding to each child’s condition. However, for optimal support, internetwork collaboration must exist in order to respond to their sometimes complex needs in an adequate and timely fashion. In order to do this, stakeholders in the education system must establish partnerships with stakeholders in both the health and social services systems. In an effort to consolidate a joint effort, a renewed partnership was established in 2003, Complementarity of Service Agreement, Between the Health, Social Service and Education Networks (MELS, 2003). This unique arrangement aims to achieve of a common vision of special needs students and their families’ needs as well as the commitment of various bodies to promote academic success (MELS, 2003). This paper will present a research on the analysis of the implementation and impact of this agreement. In fact, more than two hundred fifty stakeholders, managers and partners form the two networks were interviewed to explore the different facets. Challenges related to this agreement will be presented, as well as possible solutions to strengthen collaboration between the two networks.