The present study evaluates and reasons the method of adolescents-specific trial authenticated by Feeley and Simon, the founders of modern school of criminology, under the title of “actuarial justice”. In this regard, the present study’s investigations indicated that the orientations of the tradition-based criminal policies in trying the adolescents, like imposition of punishment, are replaced by purposive and efficient trials. The same way that mathematical models are used in insurance industry for individuals to make classifications so as to ease the processing and assessment of insuring risks, they are also used in analyzing and classifying files of adolescents exposed to accusation or conviction. Part of the present study’s results are suggestive of the reality that benefit-cost management, as an important pattern of modern criminology, has been somewhat taken into account by Iran’s and US’s criminal justice systems but with different qualities as well as different legislative and executive methods.