The study shows the feasibility and reliability of the use of ICF-based functioning descriptions to monitor school inclusion processes and to better investigate the differences between LHAs in diagnostic procedures, disease prevalence and characteristics of facilitators and barriers. As a direct consequence of the study, the Regional Councils for Instruction, Health and Social Politics have started a 3-year training programme for approximately 2500 school operators, 350 health operators in NPI services and 350 social operators.