Submarine Job (the 39 Clues: the Cahill Files, Book 2) Bk. 2
Christina McTighe
Submarine Job (the 39 Clues: the Cahill Files, Book 2) Bk. 2
Age Rating, Reading Level & Content Guide
by Christina McTighe
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
What if the greatest secrets of your family were hidden beneath the ocean? Fourteen-year-old Fiske Cahill sneaks onto the world's first nuclear submarine, only to discover a dangerous enemy lurking in the shadows. Can he protect his family’s legacy before it's too late?
Themes
Quick Assessment
This middle-grade adventure follows 14-year-old Fiske Cahill as he uncovers long-hidden family secrets aboard a nuclear submarine. With themes of mystery, action, and historical elements, the story is appropriate for readers aged 9 to 12 who enjoy thrilling, fast-paced fiction. Parents should note the presence of mild peril and suspenseful situations but no graphic content.
Why we rated Submarine Job (the 39 Clues: the Cahill Files, Book 2) Bk. 2 9LP
Submarine Job (the 39 Clues: the Cahill Files, Book 2) Bk. 2 is written at a Level 4-5 reading level across 103 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Submarine Job (the 39 Clues: the Cahill Files, Book 2) Bk. 2 works for readers up to grade 6.5.
We rate Submarine Job (the 39 Clues: the Cahill Files, Book 2) Bk. 2 as 9LP ("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.
No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.
Thematically, Submarine Job (the 39 Clues: the Cahill Files, Book 2) Bk. 2 explores adventure, mystery, historical, and military & wars — 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, mystery, historical.
Maybe not for
- ! Readers looking for something heavier — this is a gentle, low-stakes story by design.
For Parents
Content Intensity
9LP — Light — PhysicalLight 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
- 9780545457293
- Pages
- 103
- Publisher
- Scholastic Inc.
- Published
- 2012
- Type
- Fiction