What reading level is The last kids on Earth?

The last kids on Earth by Max Brallier is at a Level 5 reading level (Lexile 650L). Recommended for Middle Grades readers (Ages 9-12).

What age is The last kids on Earth appropriate for?

The last kids on Earth is recommended for Ages 9-12. HootRating: 10LP (Light — Physical). Content flags: Mild Peril, Fantasy Violence.

What genre is The last kids on Earth?

The last kids on Earth is fiction — Juvenile Fiction. Part of the The Last Kids on Earth series.

Does The last kids on Earth have any content warnings?

The last kids on Earth has a HootRating of 10LP (Light — Physical). Content flags include: Mild Peril, Fantasy Violence. 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 last kids on Earth?

The last kids on Earth by Max Brallier is 240 pages.

Reviewed by HootRated editorial · Last updated May 18, 2026

The last kids on Earth

Max Brallier

The last kids on Earth

Age Rating, Reading Level & Content Guide

by Max Brallier

The Last Kids on Earth · Book 1

Reading Level 5 10LP Ages 9-12 Balanced Read

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.

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About This Book

When a monster invasion turns his town upside down, thirteen-year-old Jack Sullivan teams up with his friends to take on the clever and creepy creature called Blarg. Together, they face wild adventures and thrilling battles to protect their world. It's a story full of courage, friendship, and monster-fighting fun!

Themes

Friendship Adventure Fantasy World-Building

Quick Assessment

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

Why we rated The last kids on Earth 10LP

The last kids on Earth is written at a Level 5 reading level with a Lexile measure of 650L across 240 pages. Strong independent readers around grade 6.0 can typically handle this book on their own; with parent or teacher support, The last kids on Earth works for readers up to grade 7.0.

We rate The last kids on Earth as 10LP ("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, Fantasy Violence.

Thematically, The last kids on Earth explores friendship, adventure, and fantasy world-building — 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.
✓ Readers who like a steady plot with enough momentum to keep pages turning.
✓ Kids drawn to stories about friendship, adventure, fantasy world-building.
✓ Readers who fall hard for one book and want a long series to live in — there are 7 more books in the The Last Kids on Earth series.