This article is an attempt to apply the conceptual framework of social stigma and some specific strategies of coping with stigma, for the interpretations of interviews with young Jehovah’s Witnesses, representing high schools from Bialystok. According to several studies, the followers of the Watchtower Society – compared to members of other churches and religious – are faced with the most negative reactions of social audience, not only in Poland but also in other countries around the world. The presence of religion class in Polish schools produces specific conditions, in which the student religious identity becomes visible. Therefore, everyday classroom experiences of such students can be – compared to catholic majority and other religious minorities – much more difficult, involving not only potential negative stereotyping, but also the problem of how to deal with the school structural conditions, sometimes clearly being in conflict with the requirements of the Jehovah’s Witnesses religion.

The nature and concentration of aerosol particles affect the classroom indoor air quality and have a significant impact on children's and youth's health. The results of investigation of trace elements concentrations, grain size and mineral distribution of aerosol particles and precipitation inside one of the classrooms in Lublin University of Technology have been presented. They were compared with the results of investigation of outdoor aerosols and precipitation. A significant difference between the indoor and outdoor particulate matter was shown. The indoor aerosols contained more Ca and K, while Fe and Pb predominated in outdoor aerosols. The attempt to identify sources of pollution in the classroom indoor air was undertaken on the basis of these results. It was emphasized that quantitative data from studies of aerosol particles in classrooms could play an important role in determination of students' exposure to specific contaminants connected with inhaled aerosols. Utility of such investigations for activities which eliminate sources of hazardous aerosols in schools was also pointed out.