Things Not Seen
Andrew Clements
Things Not Seen
Age Rating, Reading Level & Content Guide
by Andrew Clements
The text is written at a 6th grade reading level, the subject matter is intended for teens (ages 13+), and the content has moderate intensity with some emotionally heavy themes.
We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.
About This Book
What if you woke up one day and no one could see you? Bobby’s world turns upside down when he becomes invisible, and suddenly, everything he knows—school, friends, family—feels out of reach. But when he meets Alicia, who can’t see at all, Bobby discovers that being unseen might be only the beginning of a deeper mystery.
Quick Assessment
This novel explores the challenges of sudden invisibility through the eyes of a teenage boy, blending science fiction with themes of isolation and friendship. Suitable for ages 13-18, it thoughtfully addresses feelings of loneliness and the importance of trust. Parents should note that the story deals with emotional struggles but is presented in an age-appropriate manner without graphic content.
Why we rated Things Not Seen 11ME
Things Not Seen is written at a Level 6 reading level across 274 pages. Strong independent readers around grade 7.0 can typically handle this book on their own; with parent or teacher support, Things Not Seen works for readers up to grade 8.0.
We rate Things Not Seen as 11ME ("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, Things Not Seen explores science & nature, friendship, identity & self-discovery, and family — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 13+ range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about science & nature, friendship, identity & self-discovery.
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
11ME — 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
Similar Books
Based on content and theme analysis
The Unvisibles
Ian Whybrow
The Unvisibles
Ian Whybrow
Of Things Not Seen (Gemini Books)
Don Aker
Of Things Not Seen (Gemini Books)
Don Aker
Invisible Things
Andy J. Pizza
Invisible Things
Andy J. Pizza
Seeing Things
Robin Klein
Seeing Things
Robin Klein
Seen
C. M. Harris
Seen
C. M. Harris
Sight Unseen
John Schaefer
Sight Unseen
John Schaefer
Details
Book Length
- ISBN
- 9780307282514
- Pages
- 274
- Publisher
- Penguin
- Published
- December 13, 2005
- Type
- Fiction