True Book: National Parks Books in Order
6 books by Josh Gregory. Reading level: Grades 5.2–5.6. 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. True Book: National Parks (6 books by Josh Gregory) lands at reading level Grades 5.2–5.6, with average content intensity 1/5. 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.
Content Intensity Across the Series
ConsistentContent stays at a steady intensity level throughout the series.
True Book: National Parks Reading Order
| # | Title | Reading Level | Content |
|---|---|---|---|
| 1 | Grand Canyon National Park Josh Gregory | Level 5-6 | Gentle |
| 2 | Great Smoky Mountains National Park Josh Gregory | Level 5-6 | Gentle |
| 3 | Hawai'i Volcanoes Karina Hamalainen | Level 5-6 | Gentle |
| 4 | Yellowstone National Park Audra Wallace | Level 5-6 | Gentle |
| 5 | Yosemite Audra Wallace | Level 5-6 | Gentle |
| 6 | Zion Tamra B. Orr | Level 5-6 | Gentle |
All True Book: National Parks Books
Grand Canyon National Park
Josh Gregory
Grand Canyon National Park
Josh Gregory
Great Smoky Mountains National Park
Josh Gregory
Great Smoky Mountains National Park
Josh Gregory
Hawai'i Volcanoes
Karina Hamalainen
Hawai'i Volcanoes
Karina Hamalainen
Yellowstone National Park
Audra Wallace
Yellowstone National Park
Audra Wallace
Yosemite
Audra Wallace
Yosemite
Audra Wallace
Zion
Tamra B. Orr
Zion
Tamra B. Orr
Questions about the True Book: National Parks series
- What reading level is the True Book: National Parks series?
- The True Book: National Parks series by Josh Gregory is at a Grades 5.2–5.6 reading level (average Grade 5.4). Intended for Middle Grades (Ages 9–12). There are 6 books in the series.
- What order should I read the True Book: National Parks books?
- The reading-order table above lists all 6 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 True Book: National Parks series appropriate for?
- The True Book: National Parks series is recommended for Middle Grades (Ages 9–12). The average content intensity is 1/5. 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.