Breaking the sound barrier
Susan Sales Harkins
Breaking the sound barrier
Age Rating, Reading Level & Content Guide
The Story of Chuck Yeager
by Susan Sales Harkins
The text is written at a 2nd grade reading level, the subject matter is intended for younger children (ages 5–8), and the content is gentle with no concerning themes.
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About This Book
Chuck Yeager was the first person to break the sound barrier, flying faster than anyone had before! Discover how his brave flights changed the skies forever and why his story still inspires pilots today.
Themes
Quick Assessment
This early reader biography introduces young children to Chuck Yeager, a pioneering pilot who broke the sound barrier. Suitable for ages 5-8, it highlights important moments in aviation history with simple language and engaging storytelling. The book is an inspiring look at courage and innovation without any content concerns.
Why we rated Breaking the sound barrier 7C
Breaking the sound barrier is written at a Level 2 reading level across 48 pages. Strong independent readers around grade 3.0 can typically handle this book on their own; with parent or teacher support, Breaking the sound barrier works for readers up to grade 4.0.
We rate Breaking the sound barrier as 7C ("Clear") 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, Breaking the sound barrier explores biography, adventure, science & nature, and historical — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 5-8 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about biography, adventure, science & nature.
- ✓ Curious kids who prefer real-world topics over made-up stories.
Maybe not for
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
7C — ClearNo conflict beyond everyday childhood experiences. Safe for sensitive readers.
Was our "Gentle" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A 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
- 1584153989
- Pages
- 48
- Publisher
- Mitchell Lane Publishers
- Published
- 2005
- Type
- Nonfiction