The aim of the present study is to investigate the opportunities offered by a project for inclusion that has been realised in a secondary school. Specifically the study is aimed to propose a design and assessment model oriented to promote participation of all the actors. Several instruments (questionnaire, check-list, rubric, semi-strucutred interview, sociogram) have been used in order to obtain narrative and structured data. Results are discussed through an ecological perspective based on bio-psicho-social model (ICF, WHO, 2001) and on Index for Inclusion (Booth & Ainscow, 2002).