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 analyzes reviews to verify trustworthiness.
This book was assigned to my 3rd grader for one of their guided reading assignments. The book arrived the day after ordering thanks to my Amazon Prime membership. My son enjoyed reading the book and after completing his assignment has actually re-read it twice. This is a great mystery for school aged kids.