stredné školy 16 [vynechat] základné školy 15 [vynechat] extrémizmus 9 [vynechat] secondary schools 8 [vynechat] elementary schools 7 [vynechat] extremism 5 [vynechat] learners 5 [vynechat] žiaci 5 [vynechat] drogy 4 [vynechat] detská agresivita 3 [vynechat] mládež 3 [vynechat] názory a postoje 3 [vynechat] šikanovanie 3 [vynechat] deti a mládež 2 [vynechat] drugs 2 [vynechat] násilie v škole 2 [vynechat] pedagógovia 2 [vynechat] voľný čas 2 [vynechat] aggressiveness in children 1 [vynechat] alcoholism 1 [vynechat] alkoholizmus 1 [vynechat] bullying 1 [vynechat] children and youth 1 [vynechat] demokracia 1 [vynechat] detské domovy 1 [vynechat] drogová závislosť 1 [vynechat] drug abuse 1 [vynechat] education 1 [vynechat] educationalists 1 [vynechat] fajčenie 1 [vynechat]