To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
My son would come home from preschool and rave about this book they were reading and I wanted to get it for at home. My initial search for it online looked like it was going to be a difficult find but not when I found it on Amazon. YAY! My son was right too. It's a great book!