The goal of this project is the development, implementation and evaluation of a concept designed for sustainable health promotion among occupational and trade school teachers. We assume that for sustainable health promotion - along with a behavioral prevention program - a change is necessary in the structure, as well as, the working and communication processes within schools. The realization of early teacher participation and self regulated cooperative groups initiates comprehensive and goal-oriented developmental processes in the project schools. The organizational development process was accomplished in the following way: At the beginning we conducted a diagnosis of school-specific and individual health risks and the resources available to the project schools. The results were reported for both the individual and for the teacher group. This was intended to clarify the potential for improvement and, thus, strengthen the teachers' motivation toward processes of change. Following the diagnosis, the teachers chose areas of stress-related strain and then worked in groups to develop and implement behaviour and working condition-orientated intervention strategies for health promotion. The diagnosis results confirm the necessity of school-specific health promotion: the schools demonstrate very different demand and resource profiles. Furthermore, is has become evident that the central success factor for health promotion in schools is the teachers' willingness for change. The individual and group reports of the diagnosis results seem to have made clear how essential individual and organisational changes are.