A rapid expansion of the social-pathological phenomena in the transformation and integration period in the society evokes the social of need increasing effectiveness of prevention, special primary prevention. The toxic addiction of children and juveniles is currently a very alarming phenomena because of the steadily decreasing age of the first contact with drugs. The contribution is presenting the result of research realized with a sample of 3279 respondents from everything of regions in the Slovak Republic. The research was directed to determine personal experiences with drugs of pupils at the 2nd stage of elementary schools and secondary schools. The research was implemented at selected 22 elementary schools and 52 secondary schools in the Slovak Republic.

Key words: drug addiction – environment – prevention - toxic addiction of children and youth – reasons for emergence of drug addiction – elementary schools – secondary schools – social pedagogue – family