Terms such as accent, Received Pronunciation, dialect, slang or style might be introduced to make more precise distinctions which are required for an understanding of linguistic diversity.
Therefore, it has carried a sense of higher class in most aspects of life, in the same way as Received Pronunciation in English.
We do not, however, see it as the school's place to enforce the accent known as Received Pronunciation.
For example in the United Kingdom, Received Pronunciation of the English language is associated with the traditional upper class.
They used to call it "Received Pronunciation," and it was what all the radio and television presenters spoke before regional and ethnic accents came into fashion.
The phenomenon is common in some varieties of English, particularly Received Pronunciation, when a diphthong is followed by schwa.
Mark Twain spoke with a southern drawl which softened the crisp English Received Pronunciation of Muttlebury.
This is Received Pronunciation specifically, but other standards have emerged since the early 20th century (General American, General Australian).
Though many still speak the Queen's English, or the plummy, southern English known as Received Pronunciation, there is a good deal of room for variation now.
The United States does not have a concrete 'standard' accent in the same way that Britain has Received Pronunciation.