Rebellion
Karen Sandler
Rebellion
Age Rating, Reading Level & Content Guide
a Tankborn novel
by Karen Sandler
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
What if being different made you a target? Kayla is a GEN — a genetically engineered nonhuman — in a world where humans and GENs are enemies divided by fear and secrets. When a bomb changes everything, Kayla must play a dangerous game to protect her friends and uncover the truth, but can she trust anyone in a world full of lies?
Quick Assessment
Rebellion is the exciting conclusion to the Tankborn trilogy, set in a science fiction world where genetically engineered beings, called GENs, struggle for acceptance and survival. The story deals with themes of identity, family, and social division, with some intense moments involving kidnapping, terrorism, and loss. Suitable for middle-grade readers (ages 9-12), it offers complex ideas about humanity and courage while handling mature topics thoughtfully.
Why we rated Rebellion 12ME
Rebellion is written at a Level 7 reading level across 396 pages. Strong independent readers around grade 8.0 can typically handle this book on their own; with parent or teacher support, Rebellion works for readers up to grade 9.0.
We rate Rebellion 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, physical peril, social complexity, thematic difficulty — these are the dimensions parents should evaluate against their reader's tolerance.
Specific content flags noted by reviewers: Kidnapping, Violence, Terrorism.
Thematically, Rebellion explores science & nature, adventure, friendship, family, and identity & self-discovery — 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 science & nature, 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.
- ! Children who are sensitive to violence, even when handled at age-appropriate levels.
- ! 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.
Content Flags
Was our "Moderate" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A 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
- 9781600609848
- Pages
- 396
- Publisher
- Lee & Low Books, Incorporated
- Published
- 2014
- Type
- Fiction