What reading level is World War II?

World War II by Mary Pope Osborne is at a Level 6-7 reading level. Recommended for Middle Grades readers (Ages 9-12).

What age is World War II appropriate for?

World War II is recommended for Ages 9-12. HootRating: 11ME (Moderate — Emotional). Content flags: War & Conflict, Loss & Grief, Racial Discrimination.

What genre is World War II?

World War II is nonfiction. Part of the Magic Tree House Fact Tracker; Magic Tree House Super Edition series.

Does World War II have any content warnings?

World War II has a HootRating of 11ME (Moderate — Emotional). Content flags include: War & Conflict, Loss & Grief, Racial Discrimination. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is World War II?

World War II by Mary Pope Osborne is 139 pages (approximately 7,454 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

World War II

Mary Pope Osborne

World War II

Age Rating, Reading Level & Content Guide

by Mary Pope Osborne

Illustrated by Molinari, Carlo, illustrator

Magic Tree House Fact Tracker; Magic Tree House Super Edition

Reading Level 6-7 11ME Ages 9-12 Balanced Read Page-Turner Rich Discussion

The text is written at a 6th 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

Travel back in time to the era of World War II as two young adventurers uncover fascinating stories about heroic leaders, secret codes, brave resistance fighters, and the somber realities of the Holocaust. This journey brings history to life with vivid tales that reveal the courage and challenges of those who lived through this global conflict.

Themes

Historical Adventure Coming of Age Social Justice

Quick Assessment

This is a Level 6-7 book with moderate content intensity. Content themes include war & conflict, loss & grief, racial discrimination. Written for readers ages 9-12.

Why we rated World War II 11ME

World War II is written at a Level 6-7 reading level across 139 pages (approximately 7,454 words). Strong independent readers around grade 7.4 can typically handle this book on their own; with parent or teacher support, World War II works for readers up to grade 8.4.

Read aloud, World War II takes about 50 minutes, which fits within a single read-aloud session.

We rate World War II 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, social complexity — these are the dimensions parents should evaluate against their reader's tolerance.

Specific content flags noted by reviewers: War & Conflict, Loss & Grief, Racial Discrimination.

Thematically, World War II explores historical, adventure, coming of age, and social justice — these threads give the book room to mean different things to different readers. Each of these themes is concrete enough to seed a real conversation, not just a moral lesson.

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.
✓ Family book clubs, classroom read-alouds, and parents who want a strong conversation hook.
✓ Kids drawn to stories about historical, adventure, coming of age.
✓ Curious kids who prefer real-world topics over made-up stories.

Maybe not for

! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
! Children currently coping with grief — the themes may hit close to home.