Abstract
A French secondary school teacher is committed to the inclusion of adolescents with intellectual disabilities, and aligning her beliefs with her inclusion practices is by no means obvious. She nevertheless succeeds with the support of a school adaptation system at her college, and the results of our field survey, which took the form of a socio-anthropological approach centered on the case study, help to better understand how and why the support she receives from this system allows her to align her beliefs and practices in terms of inclusion. Her beliefs about the education of adolescents with intellectual disabilities are identified, and her practices and the support she receives from the ULIS system are described, and related to her beliefs about inclusion.Our results, which are based on the articulation of three theoretical approaches (multidisciplinary analysis of work situations, clinical activity and constructive ergonomics) allow, in the context of this case study, to better understand the construction of a link between beliefs and practices, but nevertheless questions the support provided by this device for the inclusion ofFrench teachers in the inclusive paradigm.