Zambia ; Evaluation criterion (language teaching) ; Lehrplan; Syllabus; Curriculum research ; Schrifterwerb (gesteuerter) ; Schriftspracherwerb (gesteuerter) ; Alphabetisierungsunterricht; Literacy (teaching of) ; Written language instruction ; Illiteracy ; Reading instruction ; Instruction (medium of) ; Medium of instruction ; Multilingualism; Polylingualism; Plurilingualism ; Africa (English language in) ; Afrika (engl. Sprache in) ; English in Africa ; Narrow Bantu; Bantu languages