39-Story Treehouse

Andy Griffiths

Cover of 39-Story Treehouse

39-Story Treehouse

Age Rating, Reading Level & Content Guide

Mean Machines & Mad Professors!

by Andy Griffiths

Reading Level 7 12C Ages 9-12 Sweet Spot

The text is written at a 7th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is gentle with no concerning themes.

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About This Book

What if your treehouse kept growing taller and taller, all the way up to 39 stories? Imagine bouncing on the world's highest trampoline, roasting marshmallows inside a volcano, or swimming in a chocolate waterfall! But when a new invention promises to write their whole book, Andy and Terry's adventure takes an unexpected twist—what could possibly go wrong?

Themes

Quick Assessment

This middle-grade fiction book follows Andy and Terry as they expand their fantastical 39-story treehouse filled with imaginative and whimsical adventures. Suitable for ages 9-12, it encourages creativity and humor while featuring themes of friendship and storytelling. The story includes light fantasy elements and playful scenarios without any intense content, making it appropriate for its target audience.

For Parents

Content Intensity

12C — Clear
Emotional
Clear
Physical
Clear
Social
Clear
Thematic
Clear

No conflict beyond everyday childhood experiences. Safe for sensitive readers.

Data confidence: standard

Was our "Gentle" content intensity rating accurate for this book?

Reading Insights

Hook Factor

3/10

A steady, thoughtful read that rewards patient readers.

Discussion Potential

1/10

A lighter read — great for independent enjoyment.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level
6
Emotional Weight
2
Theme Richness
4
World Scope
1
Data Confidence
7

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Details

Book Length

353 pages
ISBN
9781250077493
Pages
353
Publisher
Feiwel & Friends
Published
2015
Type
Fiction

Genres

Subjects

Tree HousesAuthorsImaginationAdventure and AdventurersHumorous StoriesStorytelling