Yale’s Grammatical Diversity Project is examining regional deviations from standard American English, and attempting to trace their roots. Here’s an example from the Yale Alumni Magazine story ...

Several years ago, a school district in Oakland, California suggested that African-American children be taught standard English using teaching methods used to teach the English language to non English ...

They just spoke differently, pronouncing words contrary to standard American English and used different phrases. Being placed in a speech class made Smitherman mad, but she was used to being ...

The notion of a 'standard' variety of English has been the subject of a considerable body of research. Studies have tended to focus on the standard features of British and American English. However, ...