Under locker and key

Allison K. Hymas

Under locker and key

Age Rating, Reading Level & Content Guide

by Allison K. Hymas

Reading Level 4-5 9LP Ages 9-12 Balanced Read

The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.

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About This Book

When the master key to all the lockers at Scottsville Middle School falls into the wrong hands, eleven-year-old Jeremy teams up with his rival detective Becca to stop a wave of thefts. As they race against time to recover the key, their uneasy alliance is tested by trust and schoolyard drama. Can they outsmart the thief before everything in the lockers is gone?

Themes

SchoolsDetective and Mystery StoriesFriendshipMiddle SchoolsTheft

Quick Assessment

This is a Level 4-5 book with mild content intensity. Content themes include mild peril. Written for readers ages 9-12.

Why we rated Under locker and key 9LP

Under locker and key is written at a Level 4-5 reading level across 244 pages (approximately 50,563 words). Strong independent readers around grade 5.6 can typically handle this book on their own; with parent or teacher support, Under locker and key works for readers up to grade 6.6.

Read aloud, Under locker and key runs about 5.6 hours — long enough to span several bedtime sessions.

We rate Under locker and key as 9LP ("Light — Physical") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.

Specific content flags noted by reviewers: Mild Peril.

Thematically, Under locker and key explores schools, detective and mystery stories, friendship, middle schools, and theft — 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.
✓ Kids drawn to stories about schools, detective and mystery stories, friendship.
✓ Readers who fall hard for one book and want a long series to live in — there is one more book in the MAX series.

Maybe not for

! Readers looking for something heavier — this is a gentle, low-stakes story by design.

For Parents

Content Intensity

9LP — Light — Physical

Emotional

Clear

Physical

Light ←

Social

Clear

Thematic

Clear

Light conflict or tension. Mild peril resolved quickly.

Content Flags

Mild Peril

Data confidence: standard

Was our "Mild" content intensity rating accurate for this book?

Reading Insights

Hook Factor

4/10

A steady, thoughtful read that rewards patient readers.

Discussion Potential

1/10

A lighter read — great for independent enjoyment.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level

Emotional Weight

Narrative Pace

Theme Richness

World Scope

Data Confidence

Explore all 2 books in the MAX series

Similar Books

Based on content and theme analysis

Under Locker and Key (MAX)

Allison K. Hymas