Vision and vision building play a central role in the construction of a professional culture. Vision concerns the goals that an organization wants to achieve, and indicates a shared consensus about the value of daily activities and decisions in relation to some goals and the future of an organization. In this paper, the degree of goal consensus is considered as the main indicator of the existence of a vision. Using the case study of one school in Belgium, a concrete and specific vision is portrayed. High-vision and low-vision schools are then compared in a study of nine elementary schools in Belgium. Interviews with 63 principals and staff members and site visits identify patterns of organizational culture in these schools. The results show that the high-vision schools have a clear degree of goal consensus while low-vision schools are characterized by a low awareness of common goals beyond those of the individual classroom. Interventions by principals, resulting in increased communication, can strengthen the vision of a school, and increase the potential for working toward common goals. A 19-item list of references is included. (SLD)