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.
I honestly don't understand what all the reviewers are raving about here. Awkward rhymes, unimaginative illustrations, and a story line that couldn't keep my 5 year old's attention all the way through the end. Hugely disappointed.