What reading level is Lost Prince?

Lost Prince by Matt Myklusch is at a Level 4-5 reading level (Lexile 680L). Recommended for Middle Grades readers (Ages 9-12).

What age is Lost Prince appropriate for?

Lost Prince is recommended for Ages 9-12. HootRating: 9LP (Light — Physical). Content flags: Mild Peril.

What genre is Lost Prince?

Lost Prince is fiction — Juvenile Fiction. Part of the Seaborne series.

Does Lost Prince have any content warnings?

Lost Prince has a HootRating of 9LP (Light — Physical). Content flags include: Mild Peril. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is Lost Prince?

Lost Prince by Matt Myklusch is 400 pages (approximately 88,274 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

Lost Prince

Matt Myklusch

Lost Prince

Age Rating, Reading Level & Content Guide

by Matt Myklusch

Seaborne

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.

Buy on Amazon Listen on Audible

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

About This Book

Thirteen-year-old Dean Seaborne embarks on a daring adventure to the legendary island of Zenhala, where secrets and danger await. As he carries out a secret mission for the Pirate King, Dean discovers a surprising truth about his own royal heritage. His courage and quick thinking are put to the test as he proves his place as the island's forgotten prince.

Themes

AdventurePiratesFamily Mystery Fantasy World-Building

Quick Assessment

This is a Level 4-5 book with mild content intensity. Content themes include mild peril. Written for readers ages 9-12.

Why we rated Lost Prince 9LP

Lost Prince is written at a Level 4-5 reading level with a Lexile measure of 680L across 400 pages (approximately 88,274 words). Strong independent readers around grade 5.8 can typically handle this book on their own; with parent or teacher support, Lost Prince works for readers up to grade 6.8.

Read aloud, Lost Prince runs about 9.8 hours — long enough to span several bedtime sessions.

We rate Lost Prince 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.

Specific content flags noted by reviewers: Mild Peril.

Thematically, Lost Prince explores adventure, pirates, family, mystery, 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 adventure, pirates, family.