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.
We were getting a Highlights subscription, but some of the stories didn't interest my son. I think Highlights offers these as a subscription as well, but nearly as good as a value as this! Plenty of pages, stickers are vivid and numbered to find what page it belongs to.