Practical and good information. But it's such a big topic and undertaking to go down this path, I found even the pragmatic "how-to" steps not enough. I think it's just a topic that you HAVE to discuss/learn about through human conversation. This would be GREAT background to have that conversation.
The book is one sided. SBG is put in a relentlessly positive light. No quarter is given - this is the only way forward in education. Much of the content is just regular good practice. A good exam tells you as much about a kids ability as a standards based grade.