I had to read this book for a class. . .
Now I didn't get a chance to read the whole thing. However, I did get a pretty good idea about what the author was trying to say.
His idea was that the achievement gap is increasing and that even though schools are not supposed to be segregated.. They are! Brown vs. The board of Education, made it illegal for public schools to separate black and white students. This changed for awhile but today I think it is often true that many many schools are still segregated. However, today the segregation might be by choice. People prefer to live in areas where they are other people similar to them. This could mean race, ethnicity, sexual orientation, or other reasons. So if this is true how do we fix the large achievement gap that is happening?