I've read quite a few books on equity which are more practical and better argued than this. It's written by an educational consultant who clearly has not spent enough time in the classroom. It's a lot of theory and one case study of practical application. In between are some red herrings (outputs can be shifted to performance at will, who cares about tests or standards), strained metaphors (artists don't need practical technique apparently, neither do teachers), a few bits of just bad logic (teachers can just resolve underlying social issues by believing in our students because Hattie says so!), and a whole lot of uncited or loosely cited claims spoken as truth. It's shockingly bad writing hidden behind an academic veneer.
It pains me because the topic is so vitally important to education. Equity, fairness, whole child learning, and culturally responsive teaching really are important topics... but I've never read a book which argues so poorly for them. I spent more time yelling at the author for his poor reasoning and lack of practicality than I did learning. Perhaps it'll be a good book if you never heard about these ideas before or need ways to integrate them into your teaching philosophy... but there are better texts out there on these topics. For example, for practical planning, find almost anything on UDL instead. Or for better examples and discussion over the philosophies, pick up Oluo's So you Want to Talk about Race, Hammond's Cultural Responsive Teaching and the Brain, or Equity by Design.