['Adolescents with severe disruptive behaviour have an elevated risk for adult psychosis. We investigated whether the Structured Interview for Prodromal Syndromes (SIPS) is a useful psychosis risk-screening tool for adolescents with disruptive behaviour.', 'Fifty-three adolescents residing in a reform school due to severe behavioural problems were interviewed with SIPS to ascertain clinical high-risk (CHR) state. CHR status was compared to self-reported psychiatric problems, and to registry data on hospital treatments for mental health disorders during a 5-year follow-up time.', 'CHR was associated with self-reported internalizing problems and thought problems. It failed to predict psychoses but was associated with hospital treatment for mood and conduct disorders.'] Does clinical high-risk state predict later psychosis in a delinquent adolescent population?