Bubble
Stewart Foster
Bubble
Age Rating, Reading Level & Content Guide
by Stewart Foster
The text is written at a 7th 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
The sharp scent of antiseptic fills the air as the hospital corridor echoes with hurried footsteps. Inside a special bubble, a boy faces the outside world from behind fragile walls, longing for friendship and freedom. But what happens when courage breaks through the quiet stillness?
Themes
Quick Assessment
This middle-grade novel follows a boy living with a severe autoimmune disease who must stay isolated in a protective bubble. It explores themes of family, friendship, and resilience in the face of medical challenges, making it a heartfelt and age-appropriate read for children ages 9-12. Parents should note the setting includes hospital environments and emotional moments related to illness and loss.
Why we rated Bubble 12ME
Bubble is written at a Level 7 reading level across 346 pages. Strong independent readers around grade 8.0 can typically handle this book on their own; with parent or teacher support, Bubble works for readers up to grade 9.0.
We rate Bubble as 12ME ("Moderate — Emotional") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from emotional weight — 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, Bubble explores family, friendship, illness & injury, hospitals, and orphans — 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 family, friendship, illness & injury.
Maybe not for
- ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
12ME — Moderate — EmotionalReal 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
1/10A 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
- 9781481487429
- Pages
- 346
- Publisher
- Simon and Schuster
- Published
- 2017
- Type
- Fiction