The article summarizes an experience and knowledge from the project „Our class doesn't smoke". It is focused on pupils of the second grade at the elementary schools; it contains quantification of addiction and tre-atment of smokers. Data were collected by means of questionnaires. The aim is to find out an extent of project efficiency by means of comparison of attitudes of the pupils to smoking in interested and uninterested classes. It was possible to observe an influence of different factors and circumstances on children's smoking in the inquiry. Approximately ninety students of the elementary schools in the Vysočina region were integrated in the pilot study. As the project was successful, we continued in its further realization. In the second year of this project two hundred and fifty-nine students from the three elementary schools in Brno and two schools: in Kostelec u Holešova and in Frýdek - Místek háve participated. In accordance with all indicators, the competition with a good management and active position of teachers and students is the model for putting off, reduction and abandonment of smoking.

        Key words: „Smokefree Class Competition", youth, attitudes of juniors