What reading level is the The Underland Chronicles series?

The The Underland Chronicles series by Suzanne Collins is at a Grade 4.8 reading level (average Grade 4.8). Intended for Middle Grades (Ages 9–12). There are 5 books in the series.

What order should I read the The Underland Chronicles books?

The The Underland Chronicles series has 5 books in order: 1. Gregor the Overlander, 2. Gregor and the Prophecy of Bane, 3. Gregor and the Curse of the Warmbloods, 4. Gregor and the Marks of Secret, 5. Gregor and the Code of Claw.

What age is the The Underland Chronicles series appropriate for?

The The Underland Chronicles series is recommended for Middle Grades (Ages 9–12). The average content intensity is 2.6/5.

The Underland Chronicles Books in Order

5 books by Suzanne Collins. Reading level: Grade 4.8. Middle Grades (Ages 9–12).

Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. The Underland Chronicles (5 books by Suzanne Collins) lands at reading level Grade 4.8, with average content intensity 2.6/5. Intensity stays consistent across the series — a kid who can handle the first book can generally handle the rest.

The reading-order table below lists every book with per-volume reading level and intensity badges so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.

Books

Grade 4.8

Reading Level

2.6/5

Avg. Intensity

Middle Grades

Content Intensity Across the Series

Consistent

Content stays at a steady intensity level throughout the series.

First book Latest book

The Underland Chronicles Reading Order

#	Title	Reading Level	Content
Book 1	Gregor the Overlander Suzanne Collins	Level 4-5	Moderate
Book 2	Gregor and the Prophecy of Bane Suzanne Collins	Level 4-5	Moderate
Book 3	Gregor and the Curse of the Warmbloods Suzanne Collins	Level 4-5	Moderate
Book 4	Gregor and the Marks of Secret Suzanne Collins	Level 4-5	Mild
Book 5	Gregor and the Code of Claw Suzanne Collins	Level 4-5	Mild

Level 4-5

Questions about the The Underland Chronicles series

What reading level is the The Underland Chronicles series?: The The Underland Chronicles series by Suzanne Collins is at a Grade 4.8 reading level (average Grade 4.8). Intended for Middle Grades (Ages 9–12). There are 5 books in the series.
What order should I read the The Underland Chronicles books?: The reading-order table above lists all 5 books with per-volume reading level and intensity ratings. Start with book 1 and read in publication order unless the table indicates a different recommended order for newer readers.
What age is the The Underland Chronicles series appropriate for?: The The Underland Chronicles series is recommended for Middle Grades (Ages 9–12). The average content intensity is 2.6/5. Check the intensity trajectory above to see whether content gets heavier across the series — if it does, sensitive readers may want to stop earlier in the run.