The Underland Chronicles: Gregor and the Marks of Secret
Scholastic Australia 2010
Easy read — content targets 6th grade and up
Reading level 4.9 (4th grade) but themes aimed at ages 11+
Themes include war and peace
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Genre
Themes
- courage
- destiny and prophecy
- family and loyalty
- war and peace
- prejudice and injustice
- sacrifice
- leadership
- survival
About this book
In this fourth Underland adventure, Gregor is called back beneath New York City to face growing unrest among the underground peoples and creatures. With Boots and his allies at his side, he must decipher ominous signs and fulfill his role in a dangerous prophecy. Fast-paced action, vivid worldbuilding, and high stakes keep readers turning pages. Perfect for middle schoolers who like epic quests, loyal friendships, and brave heroes.
Setting: the Underland, a vast subterranean world beneath New York City filled with humans and giant creatures
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Frequently Asked Questions
Is The Underland Chronicles: Gregor and the Marks of Secret right for my child?
It depends — here's what to consider for The Underland Chronicles: Gregor and the Marks of Secret. The reading level is AR 4.9, which is typical for 4th grade. The interest level is rated Middle Grades Plus (6+), meaning the themes and content are designed for ages 11+ (6th grade and up). Themes include courage, destiny and prophecy, family and loyalty.
How long does it take to read The Underland Chronicles: Gregor and the Marks of Secret?
At a typical 4th grade reading pace, The Underland Chronicles: Gregor and the Marks of Secret takes around 8.8h to finish. The book has 79,000 words. Slower or faster readers may vary significantly.
Does The Underland Chronicles: Gregor and the Marks of Secret have an AR quiz?
Yes — The Underland Chronicles: Gregor and the Marks of Secret has an AR quiz available, worth 11 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 The Underland Chronicles: Gregor and the Marks of Secret?
The Underland Chronicles: Gregor and the Marks of Secret has an AR reading level of 4.9, which places it at a 4th grade reading difficulty. The interest level is rated Middle Grades Plus (6+) — 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.