Very important reading for any teacher, especially those who teach in urban, aka "diverse", schools.
This book is pretty dense-- a structuralist conception of the influence of the economy and society on education, and he uses a neo-Marxist lens to interpret how knowledge is selected by dominant groups (mostly based on economic and cultural capital) and that, as in any system, the losers are "naturally" selected. Think of any class you´ve ever been in and think how certain students seem to "naturally" do well and how others, despite their best effort, just didn´t get it...
For Apple, this is the result of our hegemonic ideology enacted in our schools, and to change it will not be as easy as instituting a political reform-- to ensure access and engagement for all our students we have to critically understand whose knowledge is valued, what society gains from reproduction of this knowledge, and whether this benefits all people equally...
That´s what I took from it. This is a pretty tough read, but worth it-- actually made me realize we didn´t read that much explicitly radical (politically speaking) material and we should have.