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.
My 7yo twin daughters LOVE this series. We've read 15 so far and they keep asking for more. They can read them independently for the most part (both have reading levels around 3.0) and there are AR tests available for all we've tried so far.
My daughter loves the Nancy Drew series and the fact that they're eligible for AR points. I liked that I could buy the series for the Kindle and it automatically figured out which we owned, so I didn't re purchase those. Just wish it loaded them in order.