Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
This may be the best thing I’ve ever bought. If you know his story, the last page will bring a tear to your eye. They keep his story as true as possible while still being child friendly and the illustrations are INCREDIBLE. I will be keeping this book forever.