Based on national reviews and current systematic research the present paper analyses the frequency and evolution of deviant – especially violent – behaviour in Luxembourg schools. Findings are presented in terms of how the students and teachers perceive the respective situation themselves. The empirical results for Luxembourg give an account of the incidence rates of different forms of deviant behaviour and violence in comparison with other (European) countries. In addition, specific methods of prevention and reduction of deviant and violent behaviour that have recently been used and evaluated in Luxembourg will be presented. The report closes with a preview of future developments and recommendations.