Is
Derek Webb
Is
Age Rating, Reading Level & Content Guide
by Derek Webb
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 gentle with no concerning themes.
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About This Book
Have you ever met someone who seems like a mystery wrapped in a science book? Isabel, or Is, is new at school and knows everything about bridges and the amazing engineer Brunel. But when she suddenly disappears after a big argument, only Robert knows where to find her—what secrets is she hiding?
Quick Assessment
This middle-grade fiction follows Isabel, a new girl fascinated by science and engineering, particularly the Victorian engineer Isambard Kingdom Brunel. Set in the 1970s, the story explores themes of friendship and self-discovery while introducing readers to key science concepts and historical facts. Suitable for ages 9 to 12, it offers an engaging way to encourage interest in STEM subjects without content concerns.
Why we rated Is 9LE
Is is written at a Level 4-5 reading level across 182 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Is works for readers up to grade 6.5.
We rate Is as 9LE ("Light — Emotional") because the content sits in the "Gentle" range — no conflict beyond everyday childhood experiences. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly gentle; no single dimension stands out as a concern.
No specific content flags were raised by community reviewers, which is consistent with the gentle intensity score.
Thematically, Is explores friendship, science & nature, coming of age, 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.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about friendship, science & nature, coming of age.
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
9LE — Light — EmotionalNo conflict beyond everyday childhood experiences. Safe for sensitive readers.
Was our "Gentle" content intensity rating accurate for this book?
Reading Insights
Hook Factor
1/10A 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
- 9781909844650
- Pages
- 182
- Publisher
- Parthian Books
- Published
- 2010
- Type
- Fiction