Educational policy ; SASL; South African Sign Language ; Deaf education; Einsprachige Methode (Gehörlosenunterricht) ; German method (Deaf education) ; Deutsche Methode (Gehörlosigkeit) ; Monolingual method (Deaf education) ; Deaf education; Bicultural education (Deaf education) ; Bilingual education (Deaf education) ; Language rights; Minderheitenrechte; Grundrechte; Base right; Pressefreiheit; Charta der Regional- und Minderheitssprachen in Europa; Universal Declaration of Linguistic Rights; Human rights ; Sprachenpolitik; Language management; Language politics ; Taubheit; Deafness