The secret of the forgotten city
Carolyn Keene
The secret of the forgotten city
Age Rating, Reading Level & Content Guide
by Carolyn Keene
The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content has moderate intensity with some emotionally heavy themes.
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About This Book
What if a lost city buried beneath the Nevada desert held a treasure beyond your wildest dreams? Nancy and her friends race against time and a dangerous thief, decoding ancient petroglyphs under the scorching sun. Can they uncover the secret before it’s too late?
Themes
Quick Assessment
This middle-grade mystery follows Nancy and her friends on an archaeological dig searching for a hidden treasure in a desert city. The story involves themes of adventure, teamwork, and problem-solving, with some moments of mild peril and suspense. Suitable for ages 9-12, the book contains some tense scenes and mild threats but no graphic content.
Why we rated The secret of the forgotten city 9MP
The secret of the forgotten city is written at a Level 4-5 reading level across 192 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, The secret of the forgotten city works for readers up to grade 6.5.
We rate The secret of the forgotten city as 9MP ("Moderate — Physical") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from physical peril — these are the dimensions parents should evaluate against their reader's tolerance.
No specific content flags were raised by community reviewers, which is consistent with the moderate intensity score.
Thematically, The secret of the forgotten city explores mystery, adventure, friendship, coming of age, and girls & women — 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, friendship.
Maybe not for
- ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
For Parents
Content Intensity
9MP — Moderate — PhysicalReal stakes and emotional weight. May include sustained danger, loss, or bullying.
Was our "Moderate" 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
- 9780448095523
- Pages
- 192
- Publisher
- National Geographic Books
- Published
- 1986
- Type
- Fiction