I do not want to rate this book because I do not have children yet, and I feel like that's an unfair opinion. I read this book in preparation for becoming a foster parent, and I've just been reading all the parenting books that have been recommended to me, in order to see what style fits best with my husband and I.
I can totally see a lot of situations in this book problematic, especially if I were to use the situations for foster care. I did love the concept of having the child focus on fixing the problem, instead of just relying on punishment, but some of the examples were a bit too strict (for example, I wouldn't be able to let my foster kid go without food, if they didn't like what was cooked for dinner). I can see myself using this more on my future bio kids, with some changes. I love that this book focuses on the children learning responsibility at an early age. I was taught some of the same concepts, and I loved that I was responsible before most of my peers.
All in all, I'm not totally writing this book off - I think its good to read all different parenting styles, and pluck out the good information to build a style that works for you and your family.