Efforts to prevent and curb school bullying have resulted in a proliferation of anti-school-bullying programmes, many based on intuitive appeal rather than systematic evidence. This article presents a comparative analysis of two Norwegian programmes whose developers have demonstrated the effectiveness of their interventions: the Olweus Programme and the Zero Programme. By probing the key components of these programmes, the article provides schools with information about two prominent anti-school-bullying programmes that, to varying degrees, and mainly based on quantitative evaluations, have been found to work. In weighing up the potential of lesson drawing (both nationally and cross-nationally), schools will attach significance to the probability of positive effects, to issues concerning intensity of implementation, and to the prospect of adapting programme content to school culture and school-specific problems. It is important too that schools keep up to date with current research in the field, including studies that offer qualitative insights.