Pupil well-being has been an important topic in educational research for some time. Differences between schools in their influence on the well-being of their pupils are attributed to the policy-making capacities of the school. Little is known about schools' policy-making capacities with regard to pupil well-being, and the impact of school culture on these policy-making capacities. This study addresses these questions using a quantitative research approach. The results show that teachers rate the policy-making capacities of their school, with regard to pupil well-being, in largely positive terms and that these policy-making capacities are mainly affected by flexible perspectives of effectiveness within the culture of schools.