Evaluation criterion (language teaching) ; Language intervention; Compensatory language teaching ; Kulturvergleich; Language and culture ; Gastarbeiterkinder; Migrant workers (children of) ; Auswanderer (Kinder) ; Emigrants' children; Migrantenkinder; Aussiedler (Kinder) ; Kinder mit Migrationshintergrund; Immigrants'/Emigrants' children ; Language intervention; Children (speech therapy with) ; Speech therapy for children