Five Kingdoms: Crystal Keepers
by Brandon Mull
Simon and Schuster 2015
Great fit for 5th grade
Reading level and content both target 4th–8th grade · ages 9–14
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Genre
Themes
- friendship
- teamwork
- courage
- rescue and loyalty
- identity and belonging
- power and responsibility
- good vs. evil
- ingenuity under pressure
About this book
Cole continues his quest through the Outskirts, this time diving into Zeropolis—a dazzling, crystal-powered kingdom where magic feels a lot like technology. With friends missing and enemies everywhere, he must navigate bustling markets, secretive guilds, and tricky heists to repair a broken magic and bring his team back together. Fast-paced action, inventive world-building, and clever twists keep pages turning. Perfect for middle-grade readers who like big adventures, team dynamics, and a blend of magic and mystery.
Setting: Zeropolis in the Outskirts, a crystal-powered, city-centered kingdom within a sprawling fantasy realm
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Frequently Asked Questions
Is Five Kingdoms: Crystal Keepers right for my child?
Yes — Five Kingdoms: Crystal Keepers is a great fit for 5th grade. The reading level is AR 5.1, 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 friendship, teamwork, courage.
How long does it take to read Five Kingdoms: Crystal Keepers?
At a typical 5th grade reading pace, Five Kingdoms: Crystal Keepers takes around 12h to finish. The book has 118,000 words. Slower or faster readers may vary significantly.
Does Five Kingdoms: Crystal Keepers have an AR quiz?
Yes — Five Kingdoms: Crystal Keepers has an AR quiz available, worth 16 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 Five Kingdoms: Crystal Keepers?
Five Kingdoms: Crystal Keepers has an AR reading level of 5.1, 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.