The paper elaborates the Findings of scientific approaches to the prevention of drug abuse in schools. These investigations show that an effective school program has to include a large number of components: in accordance with the age group of the pupils it has to disseminate information, as an integral part of the school curriculum, about the physiological, psychological and social consequences of drug abuse; alongside information on drug abuse, the pupils need to be able to gain different social skills in die cllassroom or in different workshops; communication exercises which w ill enable the pupils to express their ideas and feelings clearly and directly; exercise in decision making and problem solving skills so as to make the pupils capable of making choices on their own and understanding die consequences o f their choice; exercises in learning skills how to oppose pressures to use drugs; exercises in reducing the stress we are daily exposed to in the urban enviroment. Reviewing the development of theories of addiction and the results of the different models of prevention as well as die structure of the models of social learning, the text offers many relevant insights and gives concrete instructions which can help the reader create and carry out his or her own program of prevention.