I have copied a page of the book for you below. In many ways I feel it encapsulates exactly the same lines of argument that we see currently, simply replace "slavery" for "educational inequality" and "slaves" for "low SES children" and you are away. I think this reveals not only the lines of debate, but also, with hindsight, some of the main faults in each.
Worryingly I look ahead to how this debate was resolved and the long term failure of such a solution...