Mayfly
Jeff Sweat
Mayfly
Age Rating, Reading Level & Content Guide
by Jeff Sweat
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 dust fills the air as Jemma creeps through the ruins of a forgotten city, her heart pounding with every step. Life is different here—everyone must face an early fate, ending at seventeen. But when friendship and survival collide, Jemma wonders if there's more to life than just the ticking clock.
Quick Assessment
Set in a dystopian future where teenagers face a premature death at seventeen, this middle-grade science fiction adventure explores themes of survival, friendship, and the struggle to find hope amid harsh circumstances. The story contains some suspense and mild peril but is appropriate for readers aged 9-12. Parents should note the depiction of a mysterious plague and the emotional weight of loss and survival.
Why we rated Mayfly 12ME
Mayfly is written at a Level 7 reading level across 356 pages. Strong independent readers around grade 8.0 can typically handle this book on their own; with parent or teacher support, Mayfly works for readers up to grade 9.0.
We rate Mayfly 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, thematic difficulty — 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, Mayfly explores science & nature, adventure, survival, and friendship — 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 science & nature, adventure, survival.
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
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
- 9781250139207
- Pages
- 356
- Publisher
- Feiwel & Friends
- Published
- 2018
- Type
- Fiction