The objective of this study was the evaluation of an intervention project: lecture of sensitization about preventive actions and therisks of alcohol and drugs consumption for user’s health, its family and the community. This study has evaluated students insecondary education from Ethanil Bento de Assis School, in Jardim Modelo, from Campo Mour o, PR. To establish evaluatingperception of educators about students’ sensitization and the reaction of them front to the subject, 3 of 5 teachers thatparticipated in the lecture and a randomly sample of 30 students, corresponding to 18% of the studied population, wereanalyzed. Results demonstrate that in teachers’ perception the students were sensitized and that the majority of studentsacquired knowledge that stimulated a preventive reaction front to the subject. However, we understand that to the reach ofhealth and life’s quality, knowledge cannot be privilege only of part of population. Front to this situation, it makes necessary theimplementation of multidiscipline and inter-sector actions, which surpass the simple view of information and that guarantee thecontinuous population knowledge. Thus, individual and communitarian health may be prevented and manner changes may bestimulated.