Bauer et al,7 American schools compared to 3 control schools
reported bullying behaviours were minimal,when analysed by ethnicity,28% reduction in relational bullying and 37% reduction in physical bullying but only among white students
only have some narrow benefits
failure to randomly allocate schools to programme or control raises if benefits were due to programme or pre-existing conditions
Limited support from meta-analyses
Ttofi and Farrington,89 studies and found programmes based on Olweus work were effective
Effectiveness varied between countries,working better in Norway than USA
raises questions about the effectiveness of OBPP outside of Norway
Methodological issues
the way OBPP measures bullying has some problems
programme makes the children talk about bullying in class,not all bullying may be reported,making the programme look more effective than it actually is