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Codebusters

Dan Metcalf

Cover of Codebusters

Codebusters

Age Rating, Reading Level & Content Guide

by Dan Metcalf

Reading Level 4-5 9LE Ages 9-12 Balanced Read

The text is written at a 4th 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

Jax’s heart races as he sneaks through the school halls, clutching a strange coded message. The math prize has vanished, and only the Codebusters can crack the mystery. But when shadows move just out of sight, Jax realizes this case is more than just a game—someone’s watching, and the clock is ticking.

Quick Assessment

Codebusters follows Jackson 'Jax' Hibert, a new student and math enthusiast who joins a secret group of young codebreakers. Together, they tackle school mysteries like a stolen trophy, encouraging problem-solving and teamwork. Suitable for ages 9-12, this middle-grade mystery offers engaging, age-appropriate suspense without graphic content.

Why we rated Codebusters 9LE

Codebusters is written at a Level 4-5 reading level across 145 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Codebusters works for readers up to grade 6.5.

We rate Codebusters as 9LE ("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, Codebusters explores mystery, friendship, schools, and adventure — 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 mystery, friendship, schools.

Maybe not for

  • ! Readers looking for something heavier — this is a gentle, low-stakes story by design.

For Parents

Content Intensity

9LE — Light — Emotional
Emotional
Light
Physical
Clear
Social
Clear
Thematic
Light

Light conflict or tension. Mild peril resolved quickly.

Data confidence: standard

Was our "Mild" 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
4
Emotional Weight
4
Theme Richness
4
World Scope
1
Data Confidence
7

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Details

Book Length

145 pages
ISBN
9781472943422
Pages
145
Publisher
Bloomsbury Publishing
Published
2017
Type
Fiction

Genres

Subjects

Mystery and Detective StoriesSchools