This article reports an investigation of new forms of work against degrading treatment in Swedish compulsory school. It focuses particularly on how four schools in one municipality enact the far-reaching reporting obligation. The study is theoretically informed by institutional theory and theories on teacher professionalism, and is empirically based on interviews with teachers, head teachers, school health staff, and municipal officials, as well as analysis of policy documents and local statistics. The results show that legal regulation produces institutional complexity that creates tensions between the logic of accountability and the logic of professional responsibility, balanced by school actors in their everyday work.