What reading level is Rise of the Isle of the Lost?

Rise of the Isle of the Lost by Melissa De la Cruz is at a Level 4-5 reading level (Lexile 770L). Recommended for Middle Grades readers (Ages 9-12).

What age is Rise of the Isle of the Lost appropriate for?

Rise of the Isle of the Lost is recommended for Ages 9-12. HootRating: 9LP (Light — Physical).

What genre is Rise of the Isle of the Lost?

Rise of the Isle of the Lost is fiction — Juvenile Fiction.

Does Rise of the Isle of the Lost have any content warnings?

Rise of the Isle of the Lost has a HootRating of 9LP (Light — Physical). 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 Rise of the Isle of the Lost?

Rise of the Isle of the Lost by Melissa De la Cruz is 289 pages.

Reviewed by HootRated editorial · Last updated September 7, 2026

Rise of the Isle of the Lost

Melissa De la Cruz

Rise of the Isle of the Lost

Age Rating, Reading Level & Content Guide

A Descendants Novel

by Melissa De la Cruz

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

The salty spray of the ocean fills the air as waves crash against jagged rocks. Mal, Evie, Carlos, and Jay can almost taste the salty breeze as they prepare for their biggest challenge yet — racing against Ursula’s daughter to protect King Triton’s powerful trident. The fate of the magical kingdom hangs in the balance, and every second counts.

Themes

Fantasy & MagicAdventure Friendship Romance

Quick Assessment

This middle-grade fantasy adventure follows familiar characters from the Isle of the Lost as they face off against the daughter of Ursula the sea witch to save King Triton’s trident. With elements of magic, friendship, and light romance, it is suitable for readers ages 9-12. The story contains mild peril and fantasy action but remains appropriate for its intended audience.

Why we rated Rise of the Isle of the Lost 9LP

Rise of the Isle of the Lost is written at a Level 4-5 reading level with a Lexile measure of 770L across 289 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, Rise of the Isle of the Lost works for readers up to grade 6.5.

We rate Rise of the Isle of the Lost 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.

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

Thematically, Rise of the Isle of the Lost explores fantasy & magic, adventure, friendship, and romance — 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 fantasy & magic, adventure, friendship.