The past few decades have witnessed a steady increase in the number of programmes to combat bullying that have been developed and tested in school settings. But how well do they work? What does the research tell us?

The Swedish National Council for Crime Prevention (Brå) has initiated the publication of a series of systematic reviews, in the context of which renowned researchers are commissioned to perform the studies on our behalf. In this study, the authors have carried out a systematic review, including a meta-analysis, of 59 scientific evaluations of anti-bullying programs from different parts of the world.

Maria M. Ttofi is a PhD Candidate at the Institute of Criminology, Cambridge University

David P. Farrington is Professor of Psychological Criminology at the Institute of Criminology, Cambridge University

Anna C. Baldry is Associate Professor of Social Psychology, Second University of Naples, and Senior Researcher, Intervict, Tilburg University, The Netherlands