Needs assessment (language teaching) ; Ethnomethodology ; Classroom communication; Instructional communication ; Identität und Sprache; Identity and language; Fremdheit und Sprache; Estrangement and language; Sprache und Integration; Integration und Sprache; Language and identity ; Sprachenpolitik; Language management; Language politics ; Alternation (biling.) ; Language shift (biling.) ; Sprachwechsel (biling.) ; Sprachenwahl; Language choice; Diglossia ; Bilingual education ; Dispositivanalyse; Dispositive analysis; Critical discourse analysis