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The return of the Great Brain

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Cover of The return of the Great Brain

The return of the Great Brain

Age Rating, Reading Level & Content Guide

by Unknown

Great Brain

Reading Level 5-6 10LP Ages 9-12 Balanced Read

The text is written at a 5th 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

The clever and quick-witted boy known as the Great Brain is back, using his smarts and schemes to crack a mysterious train robbery. Together with his brother, they dive into an exciting adventure filled with clever tricks and daring plans. Get ready for a fun ride full of surprises and clever problem-solving!

Quick Assessment

This is a Level 5-6 book with mild content intensity. Content themes include mild peril. Written for readers ages 9-12.

Why we rated The return of the Great Brain 10LP

The return of the Great Brain is written at a Level 5-6 reading level (approximately 40,120 words). Strong independent readers around grade 6.5 can typically handle this book on their own; with parent or teacher support, The return of the Great Brain works for readers up to grade 7.5.

Read aloud, The return of the Great Brain runs about 4.5 hours — long enough to span several bedtime sessions.

We rate The return of the Great Brain as 10LP ("Light — Physical") 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.

Specific content flags noted by reviewers: Mild Peril.

Thematically, The return of the Great Brain explores adventure, friendship, family, and mystery — 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.
  • Readers who like a steady plot with enough momentum to keep pages turning.
  • Kids drawn to stories about adventure, friendship, family.
  • Readers who fall hard for one book and want a long series to live in — there are 7 more books in the Great Brain series.

Maybe not for

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

For Parents

Content Intensity

10LP — Light — Physical
Emotional
Clear
Physical
Light
Social
Clear
Thematic
Clear

Light conflict or tension. Mild peril resolved quickly.

Content Flags

Mild Peril
Data confidence: standard

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

Reading Insights

Hook Factor

6/10

Engaging read with solid pacing and interesting themes.

Discussion Potential

2/10

A lighter read — great for independent enjoyment.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level
5
Emotional Weight
4
Theme Richness
5
World Scope
1
Data Confidence
6

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Details

Book Length

40,120 words
4h 27m read-aloud
ISBN
0440459419
Word Count
40,120
Read-Aloud
~4h 27m

Subjects

Humorous StoriesMormonsHumorous Fiction