The green glass sea
Ellen Klages
The green glass sea
Age Rating, Reading Level & Content Guide
by Ellen Klages
The text is written at a 7th 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
Have you ever wondered what it would be like to live where secrets fill the air? Eleven-year-old Dewey is on a train to find her father, but no one will say exactly where he is or what he's doing. When she arrives in a mysterious desert town, she discovers a world of hidden experiments and hush-hush missions—but what will she uncover next?
Themes
Quick Assessment
Set during World War II, this middle-grade novel follows 11-year-old Dewey Kerrigan as she moves to Los Alamos to live with her father, a scientist working on the classified Manhattan Project. The story explores themes of family, secrecy, and the ethical complexities of scientific discovery. Appropriate for ages 9-12, it contains historical context and mild tension related to the wartime setting but no graphic content.
Why we rated The green glass sea 12LE
The green glass sea is written at a Level 7 reading level across 321 pages. Strong independent readers around grade 8.0 can typically handle this book on their own; with parent or teacher support, The green glass sea works for readers up to grade 9.0.
We rate The green glass sea as 12LE ("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, The green glass sea explores family, scientists, historical, and coming of age — 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.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Readers ready to talk through themes after they finish — there's enough substance for a meaningful conversation.
- ✓ Kids drawn to stories about family, scientists, historical.
Maybe not for
- ! Readers whose emotional readiness lags behind their decoding skills — this book's intensity outruns its reading level, a classic "gifted kid" mismatch.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
12LE — Light — EmotionalLight conflict or tension. Mild peril resolved quickly.
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Hook Factor
1/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
4/10Good conversation starter with themes worth exploring together.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9780670061341
- Pages
- 321
- Publisher
- Viking Books for Young Readers
- Published
- 2006
- Type
- Fiction