Secrets of Navajo Code Talkers

Name: Secrets of Navajo Code Talkers
Author: Rachael L. Thomas
ISBN: 9781728404592

Age Rating, Reading Level & Content Guide

by Rachael L. Thomas

Alternator Books; Cryptology (Alternator Books)

Reading Level 5-6 LP · Mild · Physical Ages 9-12 Balanced Read Page-Turner

The text is written at a 5th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material. Its HootRating code, LP, means mild content, mostly physical.

Find on Amazon Listen on Audible Find on Bookshop.org

We may earn a commission from these links. Bookshop.org supports independent bookstores with every purchase.

About This Book

Discover how Navajo Marines played a crucial role in World War II by using their unique language to create secret codes that helped win battles. Journey through their brave missions and learn why the Navajo language was perfect for keeping messages safe. Unlock the special words they used and test your own code-breaking skills!

Themes

World HistoryAdventure Social Justice

Quick Assessment

This is a Level 5-6 book with mild content intensity. Content themes include mild peril, war & conflict. Written for readers ages 9-12.

Why we rated Secrets of Navajo Code Talkers LP (Mild)

Secrets of Navajo Code Talkers is written at a Level 5-6 reading level across 36 pages (approximately 1,842 words). Reading-wise, most kids in grade 7 and up can manage Secrets of Navajo Code Talkers on their own; younger readers can enjoy it with a parent or teacher reading along.

Read aloud, Secrets of Navajo Code Talkers takes about 12 minutes, which fits within a single read-aloud session.

We rate Secrets of Navajo Code Talkers as LP (Mild, mostly 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, War & Conflict.

Thematically, Secrets of Navajo Code Talkers explores world history, adventure, and social justice — 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.
✓ Reluctant readers who need fast-paced, hook-heavy stories to stay engaged.
✓ Kids drawn to stories about world history, adventure, social justice.
✓ Readers who fall hard for one book and want a long series to live in — there is one more book in the Alternator Books; Cryptology (Alternator Books) series.
✓ Curious kids who prefer real-world topics over made-up stories.

Maybe not for

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

For Parents

Content Intensity

LP · Mild · Physical

Emotional

Gentle

Physical

Mild ←

Social

Mild

Thematic

Gentle

Reading 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

Light conflict or tension. Mild peril resolved quickly.