Books by Stuart Gibbs
21 books by Stuart Gibbs, rated for reading level and content intensity.
Stuart Gibbs has 13 rated books in HootRated's catalog spanning Grade 4–6 reading level. The typical Stuart Gibbs book lands at Grade 6, with average content intensity 2/5. Most Stuart Gibbs titles fall within the Spy School series.
Reading level alone doesn't tell parents whether a Stuart Gibbs book is right for a child. 100% of Stuart Gibbs's rated titles are at Gentle or Mild intensity — appropriate for sensitive readers or kids reading ahead of their emotional readiness. 0% are rated Intense or Very Intense. The intensity badges below (green → red) help you match books to your child's emotional readiness, not just their reading ability. See our methodology for how we rate.
Double Cross
Stuart Gibbs
Double Cross
Stuart Gibbs
Belly Up
Stuart Gibbs
Belly Up
Stuart Gibbs
Spy school
Stuart Gibbs
Spy school
Stuart Gibbs
Evil spy school
Stuart Gibbs
Evil spy school
Stuart Gibbs
Evil Spy School
Stuart Gibbs
Evil Spy School
Stuart Gibbs
Big game
Stuart Gibbs
Big game
Stuart Gibbs
Spaced Out
Stuart Gibbs
Spaced Out
Stuart Gibbs
Spy ski school
Stuart Gibbs
Spy ski school
Stuart Gibbs
Spy school goes south
Stuart Gibbs
Spy school goes south
Stuart Gibbs
Charlie Thorne and the Last Equation
Stuart Gibbs
Charlie Thorne and the Last Equation
Stuart Gibbs
Spy School Project X
Stuart Gibbs
Spy School Project X
Stuart Gibbs
Labyrinth of Doom
Stuart Gibbs
Labyrinth of Doom
Stuart Gibbs
Spy Camp the Graphic Novel
Stuart Gibbs
Spy Camp the Graphic Novel
Stuart Gibbs
Spaced Out
Stuart Gibbs
Spaced Out
Stuart Gibbs
Evil Spy School the Graphic Novel
Stuart Gibbs
Evil Spy School the Graphic Novel
Stuart Gibbs
Spy School at Sea
Stuart Gibbs
Spy School at Sea
Stuart Gibbs
Spy School British Invasion
Stuart Gibbs
Spy School British Invasion
Stuart Gibbs
Spy Camp
Stuart Gibbs
Spy Camp
Stuart Gibbs
Evil Spy School
Stuart Gibbs
Evil Spy School
Stuart Gibbs
Spy School Secret Service
Stuart Gibbs
Spy School Secret Service
Stuart Gibbs
Spy School Revolution
Stuart Gibbs
Spy School Revolution
Stuart Gibbs
Questions about Stuart Gibbs's books
- What reading level are Stuart Gibbs's books?
- Stuart Gibbs's rated books range from Grade 4–6, with the typical book at Grade 6. Each title has a separate content intensity score so parents can choose by emotional readiness, not just text difficulty.
- Are Stuart Gibbs's books appropriate for sensitive readers?
- 13 of Stuart Gibbs's 13 rated books (100%) are at Gentle or Mild intensity — safe for sensitive readers. 0 (0%) are rated Intense or Very Intense. Average intensity: 2/5.
- What age are Stuart Gibbs's books appropriate for?
- Stuart Gibbs's rated books target Ages 9–12. HootRated rates each book on reading level and content intensity — match both dimensions, not just one.