Readers on Amazon consider it readable at 3 - 4 Grade Level.
A popular method used by schools to measure a student reader’s ability is Lexile level or a Lexile Measure. The Lexile Level of The 13-Story Treehouse: Monkey Mayhem! is 560L .
Readers of age 7 - 11 years will enjoy The 13-Story Treehouse: Monkey Mayhem! .
New York Times bestselling author Andy Griffiths invites readers to come hang out with him and his friend Terry Denton in their 13-Story Treehouse―filled with Andy and Terry's signature slapstick humor!Special collector's edition, now in stunning full color!Andy and Terry live in a treehouse. But it's not just any old treehouse, it's the most amazing treehouse in the world!This treehouse has thirteen stories, a bowling alley, a see-through swimming pool, a secret underground laboratory, and a marshmallow machine that follows you around and automatically shoots marshmallows into your mouth whenever you are hungry. Life would be perfect for Andy and Terry if it wasn't for the fact that they have to write their next book, which is almost impossible because there are just so many distractions, including thirteen flying cats, giant bananas, mermaids, sea monsters pretending to be mermaids, enormous gorillas, and dangerous burp gas-bubblegum bubbles!Join the fun with The 13-Story Treehouse. This title has Common Core connections.Read the whole series!The 13-Story TreehouseThe 26-Story TreehouseThe 39-Story TreehouseThe 52-Story TreehouseThe 65-Story TreehouseThe 78-Story TreehouseThe 91-Story TreehouseThe 104-Story TreehouseThe 117-Story TreehouseThe 130-Story TreehouseThe 143-Story TreehouseThe 156-Story Treehouse Read more