Implementing Explicit Instruction

While I think "The Silenced Dialogue" is a very interesting article, I find the lack of implementation strategies problematic. I agree with Delpit that there is a language of power and that everyone should have access to it, but I'm not sure how we can achieve this goal. Diversity is something that we value in this country, which I think is a good thing, but unfortunately the very things that make us unique also make it difficult to standardize teaching methods. How can teachers effectively instruct their students when there are so many different racial, ethnic, economic, and educational backgrounds in one classroom? It would be quite difficult for a teacher to be authoritarian enough for some students while simultaneously avoiding being characterized as "mean" by others. One possible way to teach all students the language of power is to separate the students into different groups. When I was in elementary school, all of the fifth-graders were divided into four groups based upon their mathematical abilities. There were four fifth-grade teachers, and each teacher took responsibility for one group of students; everyday during class we would get into our groups for a short period of time for our math lessons and then return to our normal classroom when we had finished. Perhaps something similar could be used to teach the language of power to all students. On another note, I wanted to ask what you guys think the language of power is in America. Obviously it is standard English, but is there an accepted dialect or accent? For example, is a Southern drawl outside the language of power? What about the Northeastern accent? I am even told that there is a West Coast accent (there was an article about this in The Oregonian last year) that separates us from the rest of the country. Is there a national language of power or is it simply a regional thing?