I can appreciate that these books are meant to be goofy and fun, but they tend to stray into distasteful. The characters are sixth graders, but the reading level is about third grade or younger.We've read most of the series, and I think my favorite is "From Bad to Verse". Almost every book in the series shows kids acting irreverantly toward parents/authority and disrespectfully toward one another.Plenty of underpants humor. Divorced parents, with a "cool" dad.I prefer the Geronimo Stilton books -- they are more uniformly charming and innocent.