Box of Bones
Marina Cohen
Box of Bones
Age Rating, Reading Level & Content Guide
by Marina Cohen
The text is written at a 6th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.
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About This Book
Kallie grips the strange wooden puzzle box tightly as the faceless man disappears into the crowd. She twists the pieces, and suddenly, the air around her shimmers—something has been released! Now, two worlds are colliding, and Kallie must uncover the secrets before it's too late.
Quick Assessment
This middle-grade novel follows twelve-year-old Kallie, a logical thinker who encounters a mysterious puzzle box at a local festival. As she solves its secrets, she becomes entwined with a magical world, blending fantasy with real-world challenges. Suitable for ages 9-12, the story explores themes of curiosity and adventure without intense content.
Why we rated Box of Bones 11LE
Box of Bones is written at a Level 6 reading level across 224 pages. Strong independent readers around grade 7.0 can typically handle this book on their own; with parent or teacher support, Box of Bones works for readers up to grade 8.0.
We rate Box of Bones as 11LE ("Light — Emotional") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.
No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.
Thematically, Box of Bones explores adventure, fantasy world-building, mystery, and coming of age — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Kids drawn to stories about adventure, fantasy world-building, mystery.
Maybe not for
- ! Readers looking for something heavier — this is a gentle, low-stakes story by design.
For Parents
Content Intensity
11LE — Light — EmotionalLight conflict or tension. Mild peril resolved quickly.
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Hook Factor
3/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
2/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9781250172228
- Pages
- 224
- Publisher
- Macmillan + ORM
- Published
- 2019
- Type
- Fiction