This article reports on school staff's and occupational health nurses' development project (2001-2004), which aimed to promote school staff's occupational wellbeing by activities to maintain the ability to work in 12 comprehensive schools in Finland. The effects of the project were evaluated based on a follow-up study questionnaire presented to the staff (n=141) in the years 2002 and 2004. During the 2 years of development, the staff's satisfaction with the activities to maintain their ability to work notably increased. Positive development was also seen in the different aspects of occupational wellbeing (working conditions, working community, worker and work, professional competence). These results cannot be generalized widely, but they can be considered as suggestive in comparable situations. Consequently, the portrayal of the development project and the results of the staff's evaluations are valuable in planning projects concerning occupational wellbeing for school and other working communities. (Contains 6 tables and 2 figures.)