This entire series is excellent, rigorous non-fiction that is perfect for the junior high and high school geography classroom. As a teacher I can use the charts, maps, and information in this book to teach not only geography content, but literacy and science skills as well. I could not be more happy with this book. It is written at a 9th grade level, according to the publisher, ABDO. I will be reading the other 31 books in this series as soon as I am able.