What reading level is the Core Library; Great Warriors (ABDO) series?

The Core Library; Great Warriors (ABDO) series by Paul Hoblin is at a Grades 5.1–5.6 reading level (average Grade 5.3). Intended for Middle Grades (Ages 9–12). There are 8 books in the series.

What order should I read the Core Library; Great Warriors (ABDO) books?

The Core Library; Great Warriors (ABDO) series has 8 books in order: 1. Gladiators, 2. Green Berets, 3. Knights, 4. Navy Seals, 5. Ninjas, and 3 more.

What age is the Core Library; Great Warriors (ABDO) series appropriate for?

The Core Library; Great Warriors (ABDO) series is recommended for Middle Grades (Ages 9–12). The average content intensity is 1.6/5.

Core Library; Great Warriors (ABDO) Books in Order

8 books by Paul Hoblin. Reading level: Grades 5.1–5.6. 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. Core Library; Great Warriors (ABDO) (8 books by Paul Hoblin) lands at reading level Grades 5.1–5.6, with average content intensity 1.6/5. 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

Grades 5.1–5.6

Reading Level

1.6/5

Avg. Intensity

Middle Grades

Content Intensity Across the Series

Consistent

Content stays at a steady intensity level throughout the series.

First book Latest book

Core Library; Great Warriors (ABDO) Reading Order

#	Title	Reading Level	Content
1	Gladiators Paul Hoblin	Level 5-6	Mild
2	Green Berets Martin Gitlin	Level 5-6	Mild
3	Knights Racquel Foran	Level 5-6	Gentle
4	Navy Seals Kristin Marciniak	Level 5-6	Mild
5	Ninjas Carla Mooney	Level 5-6	Gentle
6	Samurai Christine Heppermann	Level 5-6	Gentle
7	Spartans Steven Otfinoski	Level 5-6	Mild
8	Vikings Marty Gitlin	Level 5-6	Mild

All Core Library; Great Warriors (ABDO) Books

Gladiators

Paul Hoblin

Gladiators

Paul Hoblin

Level 5-6 Mild

Green Berets

Martin Gitlin

Green Berets

Martin Gitlin

Level 5-6 Mild

Knights

Racquel Foran

Knights

Racquel Foran

Level 5-6 Gentle

Navy Seals

Kristin Marciniak

Navy Seals

Kristin Marciniak

Level 5-6 Mild

Ninjas

Carla Mooney

Ninjas

Carla Mooney

Level 5-6 Gentle

Samurai

Christine Heppermann

Samurai

Christine Heppermann

Level 5-6 Gentle

Spartans

Steven Otfinoski

Spartans

Steven Otfinoski

Level 5-6 Mild

Vikings

Marty Gitlin

Vikings

Marty Gitlin

Level 5-6 Mild

Questions about the Core Library; Great Warriors (ABDO) series

What reading level is the Core Library; Great Warriors (ABDO) series?: The Core Library; Great Warriors (ABDO) series by Paul Hoblin is at a Grades 5.1–5.6 reading level (average Grade 5.3). Intended for Middle Grades (Ages 9–12). There are 8 books in the series.
What order should I read the Core Library; Great Warriors (ABDO) books?: The reading-order table above lists all 8 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 Core Library; Great Warriors (ABDO) series appropriate for?: The Core Library; Great Warriors (ABDO) series is recommended for Middle Grades (Ages 9–12). The average content intensity is 1.6/5. 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.