“…A lower number of risky behaviors was connected with a higher level of academic competency (Bryant, Schulenberg, Bachman, O'Malley, Johnston, 2000;Tammelin, Näyhä, Laitinen, Rintamäki, Järvelin, 2003), as well as higher physical activity (Delisle, Werch, Wong, Bian, Weiler, 2010). Thus, adolescents with high school competence and most likely a high awareness of healthy behaviors usually attend grammar schools (Echols, Willms, 1995;Green, Navarro-Paniagua, Ximénez-De-Embún, Mancebón, 2014), whereas adolescents who do not satisfy these criteria attend vocational schools. An analysis of data collected in Poland by 'Health Behavior in Schoolaged Children: A WHO Collaborative Cross-National Study' also confirmed that lack of physical activity was more frequent in students of vocational schools rather than students of schools of other types (Jodkowska, Oblacińska, Mikiel-Kostyra, Tabak, 2012).…”