Reviewed by HootRated editorial · Last updated
Killing Mr. Griffin
Lois Duncan
The text is written at a 4th grade reading level, the subject matter is intended for teens (ages 13+), and the content is intense and may include graphic or distressing scenes. Its HootRating code, IE, means intense content, mostly emotional.
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About This Book
When a group of students decide to prank their strict teacher, things quickly spiral out of control. What starts as a harmless joke turns dangerous, and Susan soon finds herself caught in a chilling mystery where trust is shattered and lives are at risk. Can she uncover the truth before it's too late?
Quick Assessment
This is a Level 4-5 book with intense content intensity. Content themes include physical danger, realistic violence, fear & anxiety. Written for readers ages 13+.
Why we rated Killing Mr. Griffin IE (Intense)
Killing Mr. Griffin is written at a Level 4-5 reading level across 223 pages (approximately 57,350 words). Upper Grades (Ages 13+) is the typical interest range for this book — readers in that age band have the maturity and attention span suited to the story, separate from whether they can decode the words.
Read aloud, Killing Mr. Griffin runs about 6.4 hours — long enough to span several bedtime sessions.
We rate Killing Mr. Griffin as IE (Intense, mostly emotional) because the content sits in the "Intense" range — intense conflict including peril, frightening scenes, or emotionally heavy themes. The strongest signals come from emotional weight, physical peril — these are the dimensions parents should evaluate against their reader's tolerance.
Specific content flags noted by reviewers: Physical Danger, Realistic Violence, Fear & Anxiety.
Thematically, Killing Mr. Griffin explores mystery, friendship, and coming of age — 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 denser, slower-paced text.
- ✓ Kids drawn to stories about mystery, friendship, coming of age.
Maybe not for
- ! Sensitive readers who get overwhelmed by intense conflict or scary scenes.
- ! Children younger than 13 — the content intensity is above what most younger kids can process comfortably.
- ! Children who are sensitive to violence, even when handled at age-appropriate levels.
- ! Reluctant readers who need a fast hook — the text is dense and the pacing rewards patience.
For Parents
Content Intensity
IE · Intense · EmotionalReading the HootRating code: the first letter is the content intensity (C = Gentle · L = Mild · M = Moderate · I = Intense · V = Very Intense); the second, when there is one, is the kind of content that drives it (E = Emotional · P = Physical · S = Social · T = Thematic). Reading level and age range are rated separately. How we rate
Heavy themes explored in depth. War, death, abuse addressed directly.
Content Flags
Was our "Intense" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A denser, slower-paced 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
- 0440945151
- Pages
- 223
- Publisher
- Hachette+ORM
- Published
- 1979
- Type
- Fiction
- Word Count
- 57,350
- Read-Aloud
- ~6h 22m
- Text Density
- Dense