The Campbell Collaboration has published a policy brief looking at six systematic reviews of school-based interventions with students who demonstrate at-risk behaviour.
It found that school intervention programmes are marginally effective at ensuring that more students attend school, and at curtailing harmful student behaviours.
Students participating in 28 programmes addressing chronic truancy improved their attendance by nearly five days per year, although in most of the programmes student attendance was still below 90%.
A review of 73 violence prevention programmes found that students showed significantly lower levels of aggressive and disruptive behaviour, including a 7% reduction in fighting on school grounds.
Twelve studies of interventions aimed at improving classroom-wide behaviour found that students in the programmes showed less disruptive behaviour than their peers.
The 44 anti-bullying interventions studied in 16 countries showed average decreases of 20-23% in bullying and 17-20% in victimisation.
Evidence from 12 studies of sexual violence prevention programmes found that students had increased awareness of sexual violence and approaches to conflict resolution, but there was no effect on levels of violent behaviour or victimisation.
Source: Effects of School Based Interventions to Improve Student Behaviour: A Review of Six Campbell Systematic Reviews (2016), The Campbell Collaboration.