Parental Monitoring and its Relation to Behaviour Problems and Risk Behaviour in an Adolescent School Sample Numerous research studies emphasize parental monitoring as a protective factor for adolescent problem behaviour. The purpose of the study presented was to use Stattin and Kerr’s (2000) monitoring subscales for the first time in a German-speaking area and to explore the relations to behaviour problems in an adolescent school sample. The two active monitoring strategies ‘parental control’ and ‘parental solicitation’ as well as ‘parental knowledge’ and ‘child disclosure’ relating to behaviour problems and risk behaviour were examined. A sample of 494 pupils, grades 5, 7 and 9, of German secondary schools and their parents answered questions on ‘parental knowledge’, ‘control’, ‘solicitation’ and ‘child disclosure’. Adolescents also answered the German version of the Strengths and Difficulties Questionnaire (SDQ) and items about risk behaviour like frequency of violence, delinquency, substance abuse, self-injuring behaviour and school absenteeism. Behaviour problems in terms of the SDQ could be predicted sufficiently by ‘parental knowledge’, but for the prediction of risk behaviour, the active parental monitoring strategies were of importance, too. More ‘parental knowledge’, more ‘control’ and less ‘solicitation’ could predict less risk behaviour. Results confirm ‘parental knowledge’ as a general protective factor for problem behaviour. However, they show the importance of ‘parental control’ for adolescent risk behaviour.