What reading level is The boy who knew everything?

The boy who knew everything by Victoria Forester is at a Level 5-6 reading level (Lexile 860L). Recommended for Middle Grades readers (Ages 9-12).

What age is The boy who knew everything appropriate for?

The boy who knew everything is recommended for Ages 9-12. HootRating: 10LE (Light — Emotional).

What genre is The boy who knew everything?

The boy who knew everything is fiction — Juvenile Fiction.

Does The boy who knew everything have any content warnings?

The boy who knew everything has a HootRating of 10LE (Light — Emotional). 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 boy who knew everything?

The boy who knew everything by Victoria Forester is 406 pages.

Reviewed by HootRated editorial · Last updated September 7, 2026

The boy who knew everything

Victoria Forester

The boy who knew everything

Age Rating, Reading Level & Content Guide

by Victoria Forester

Reading Level 5-6 10LE 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

What if you knew everything? Conrad Harrington III is a genius with a prophecy hanging over his head, and Piper McCloud can fly like no one else. Together, they might change the world—but can they survive the challenges that lie ahead?

Themes

GeniusFriendship Adventure Science & Nature Fantasy World-Building

Quick Assessment

This middle-grade science fiction novel follows Conrad, a highly intelligent boy, and Piper, a girl with the ability to fly, as they navigate a prophecy that could alter the fate of the world. Suitable for readers aged 9-12, the story explores themes of friendship, courage, and self-discovery without intense or graphic content.

Why we rated The boy who knew everything 10LE

The boy who knew everything is written at a Level 5-6 reading level with a Lexile measure of 860L across 406 pages. Strong independent readers around grade 6.5 can typically handle this book on their own; with parent or teacher support, The boy who knew everything works for readers up to grade 7.5.

We rate The boy who knew everything as 10LE ("Light — Emotional") 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 boy who knew everything explores genius, friendship, adventure, science & nature, 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.
✓ Patient readers who enjoy slower, character-driven stories.
✓ Kids drawn to stories about genius, friendship, adventure.