What reading level is The League of Seven?

The League of Seven by Alan Gratz is at a Level 4-5 reading level (Lexile 740L). Recommended for Middle Grades readers (Ages 9-12).

What age is The League of Seven appropriate for?

The League of Seven is recommended for Ages 9-12. HootRating: 9LT (Light — Thematic).

What genre is The League of Seven?

The League of Seven is fiction — Juvenile Fiction.

Does The League of Seven have any content warnings?

The League of Seven has a HootRating of 9LT (Light — Thematic). No specific content flags noted. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is The League of Seven?

The League of Seven by Alan Gratz is 350 pages.

Reviewed by HootRated editorial · Last updated June 9, 2026

The League of Seven

Alan Gratz

The League of Seven

Age Rating, Reading Level & Content Guide

by Alan Gratz

Illustrated by Helquist, Brett, illustrator

Reading Level 4-5 9LT 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

What if electricity was forbidden and the world was full of shadowy secrets? Imagine a place where Native Americans and Yankees live together in an uneasy peace, but something ancient and evil hides just beyond the gaslights. Can a daring group called the League of Seven stop the darkness before it consumes everything?

Themes

Adventure Science & Nature Fantasy World-Building MulticulturalSecret Societies

Quick Assessment

This middle-grade adventure is set in an alternate 1870s America where electricity is outlawed and supernatural dangers threaten society. It explores themes of cooperation between Native Americans and Yankees within a fictional United Nations framework and includes fantasy elements with eldritch evil. Appropriate for ages 9-12, it contains mild peril and action suitable for this age group.

Why we rated The League of Seven 9LT

The League of Seven is written at a Level 4-5 reading level with a Lexile measure of 740L across 350 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, The League of Seven works for readers up to grade 6.5.

We rate The League of Seven as 9LT ("Light — Thematic") 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.

No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.

Thematically, The League of Seven explores adventure, science & nature, fantasy world-building, multicultural, and secret societies — 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 adventure, science & nature, fantasy world-building.