DGS; German Sign Language ; Prestige; Sprachattitüde; Linguizismus; Linguicism ; Amtssprache; Official language; National language ; Barrierefreiheit; Communication access; Communication barrier; Exklusion (Soziolinguistik) ; Exclusion (sociolinguistics) ; No Child Left Behind Act; Inclusion/Exclusion (sociolinguistics) ; Needs assessment (language politics) ; Minoritätensprache; Minority language