Deaf education; Bicultural education (Deaf education) ; Bilingual education (Deaf education) ; Barrierefreiheit; Communication access; Communication barrier; Exklusion (Soziolinguistik) ; Exclusion (sociolinguistics) ; No Child Left Behind Act; Inclusion/Exclusion (sociolinguistics) ; Language rights; Minderheitenrechte; Grundrechte; Base right; Pressefreiheit; Charta der Regional- und Minderheitssprachen in Europa; Universal Declaration of Linguistic Rights; Human rights ; Needs assessment (language politics) ; Minoritätensprache; Minority language ; Taubheit; Deafness