A self-managed community group, mandated to assist young offenders in completing compensatory and educational measures, requested the help of a community psychologist in developing an instrument to evaluate its community work program. This article describes the collaborative process by which the instrument was developed. Despite the technical nature of the project, the community psychologist sought to maximize staff participation in each step of the process. This approach is consistent with the democratic values of community psychology as well as the organizational culture of' the particular community group.