The black English vernacular of the United States presents especially vexed questions for the educational system and society as a whole.

vernacular (n) 1: a characteristic language of a particular group (as among thieves); ”they don’t speak our lingo” [syn: cant, jargon, slang, lingo, argot, patois] 2: the everyday speech of the people (as distinguished from literary language) – source: A History Of The English Language, p. 309