I'm enjoying the idea, but there's an annoying little thing that keeps bugging me: the author keeps using first and last names together of the students, after they've been introduced, and some of those names are tricky. It really seems to slow down the reading aloud. Which is one reason why I advise anyone writing for MG or younger to read their texts aloud before publication. It makes a difference.
We were liking it just okay, and couldn't manage to finish it even when it was more than a week overdue at the library. Even though this one didn't rock us, I'd be willing to try the author again with the next book.