Schlagwort(e): Social sciences Study and teaching ; Education Curricula ; Junior high schools ; High schools ; High schools ; Sciences sociales - Étude et enseignement ; Programmes d'études - Missouri ; Écoles secondaires ; Écoles secondaires - Missouri ; junior high schools (buildings) ; high schools (institutions) ; junior high schools (institutions) ; secondary schools (institutions) ; secondary schools (buildings) ; high schools (buildings) ; Education - Curricula ; High schools ; Junior high schools ; Social sciences - Study and teaching ; Education ; History ; United States History ; Study and teaching ; Missouri ; United States