The model represents an integration of the conceptual ideas found in the educational environment literature and the literature on delinquency and the schools. The model specifies the relationships among perceptions of the school's social climate, school outcomes, association with delinquent peers (differential association) and four types of delinquency. Using survey data from a sample (N=578) of adolescents in Reykjavik, Iceland, the path anaylsis findings from this study offer modest support for the model. School outcomes and differential association have the strongest direct effect on all types of delinquency. Perceptions of the school's social climate mainly have an effect on delinquency through their relationship with school outcomes and differential association. (Author abstract)