Secrets of the Dragon Sanctuary
by Brandon Mull
Random House 2026
Great fit for 5th grade
Reading level and content both target 4th–8th grade · ages 9–14
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Genre
Themes
- sibling bonds
- courage
- responsibility
- trust and betrayal
- good vs. evil
- teamwork
- temptation
- quests
About this book
Kendra and Seth return to the hidden world of Fablehaven, where a powerful artifact is rumored to lie within a perilous dragon sanctuary. Rival forces are closing in, and every step demands teamwork, courage, and quick thinking. High-stakes action, mythical creatures, and clever twists keep the pages turning. Ideal for middle grade fantasy readers who love epic quests, magical mysteries, and brave siblings.
Setting: modern-day world and a hidden dragon sanctuary within the Fablehaven network of magical preserves
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Frequently Asked Questions
Is Secrets of the Dragon Sanctuary right for my child?
Yes — Secrets of the Dragon Sanctuary is a great fit for 5th grade. The reading level is AR 5.6, which is typical for 5th grade. The interest level is rated Middle Grades (4–8), meaning the themes and content are designed for ages 9–14 (4th–8th grade). Themes include sibling bonds, courage, responsibility.
How long does it take to read Secrets of the Dragon Sanctuary?
At a typical 5th grade reading pace, Secrets of the Dragon Sanctuary takes around 15h to finish. The book has 151,000 words. Slower or faster readers may vary significantly.
Does Secrets of the Dragon Sanctuary have an AR quiz?
Yes — Secrets of the Dragon Sanctuary has an AR quiz available, worth 23 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.
What grade level is Secrets of the Dragon Sanctuary?
Secrets of the Dragon Sanctuary has an AR reading level of 5.6, which places it at a 5th grade reading difficulty. The interest level is rated Middle Grades (4–8) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.