Kozol's focus of this book is to examine urban school districts, which are severely segregated by race and class. They are overwhelmingly nonwhite and very poor, which contrasts sharply with the wealthy overwhelmingly white suburban schools right next to them (p. 74). He limits his selections to poor inner-city schools rather than include examples of all poor schools because he feels that they best exhibit racial segregation and social class divisions. He notes that
Kozol's focus of this book is to examine urban school districts, which are severely segregated by race and class. They are overwhelmingly nonwhite and very poor, which contrasts sharply with the wealthy overwhelmingly white suburban schools right next to them (p. 74). He limits his selections to poor inner-city schools rather than include examples of all poor schools because he feels that they best exhibit racial segregation and social class divisions. He notes that