I bought this for my classroom and wanted to preview it before putting it out. It was great! I think a very strong 2nd graders and up would be able to read and comprehend. I teach 5th grade and think that the pacing and vocabulary was good and on par with my goal of having kids read it and return over the course of a day. 

The art was also really cute! And the timeline at the end of each chapter was helpful at keeling events in order.