A good book to suggest for 4th-6th graders looking for something with adventure and humor. I liked the silliness, but some of the scenarios were unlikely to the point of ridiculousness (a kid throws teachers' cars around the parking lot and there's no mention of it later, like that might have been a problem for a few people?). 
 I didn't finish this, but only because I know enough about it to do a booktalk and I had some books come in on hold.