John Diamond
Leon Garfield
John Diamond
Age Rating, Reading Level & Content Guide
by Leon Garfield
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
There’s a secret hidden in a dying father’s last words, sending twelve-year-old William on a whirlwind journey through the shadowy streets of eighteenth-century London. Along the way, he meets strange and mysterious people whose true intentions are anyone’s guess—but that’s only the beginning.
Quick Assessment
This historical mystery adventure follows twelve-year-old William as he unravels the secrets left by his dying father in eighteenth-century London. The story includes themes of family, intrigue, and exploration suitable for middle-grade readers, with no significant content concerns. It offers a blend of suspense and historical detail appropriate for ages 9-12.
Why we rated John Diamond 9LE
John Diamond is written at a Level 4-5 reading level across 177 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, John Diamond works for readers up to grade 6.5.
We rate John Diamond 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, John Diamond explores mystery, adventure, family, and historical — 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, adventure, family.
Maybe not for
- ! Readers looking for something heavier — this is a gentle, low-stakes story by design.
For Parents
Content Intensity
9LE — 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
3/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 0374324506
- Pages
- 177
- Publisher
- Farrar, Straus & Giroux (BYR)
- Published
- 2001
- Type
- Fiction