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Humphrey Adventures Books in Order

Humphrey Adventures is a 10-book series by Betty G. Birney for ages 9–12, at a grades 3–4 reading level, with gentle content (HootRated intensity 1/5).

Books
10
By publication date
Reading level
Grades 3–4
Average grade level 4.1
Recommended ages
Ages 9–12
From HootRated age ratings
Content intensity
Gentle
HootRated 1/5

Humphrey Adventures Reading Order

Series numbers aren't available for most Humphrey Adventures books, so they're listed by publication date (oldest first).

# Title Reading Level Ages Content
1 The world according to Humphrey
2004
Level 4-5 9-12 Gentle
2 Friendship according to Humphrey
2005
Level 4 9-12 Gentle
3 Trouble According to Humphrey
2007
Level 4-5 9-12 Gentle
4 Adventure According to Humphrey
2009
Level 4-5 9-12 Gentle
5 School days according to Humphrey
2011
Level 4-5 9-12 Gentle
6 Mysteries according to Humphrey
2012
Level 3-4 9-12 Gentle
7 Winter according to Humphrey
2012
Level 4 9-12 Gentle
8 Secrets According to Humphrey
2014
Level 4-5 9-12 Gentle
9 Imagination according to Humphrey
2015
Level 3-4 9-12 Gentle
10 Spring according to Humphrey
2016
Level 3-4 9-12 Gentle

Content Intensity Across the Series

Consistent

Content stays at a steady intensity level throughout the series.

1
2
3
4
5
6
7
8
9
10
First book Latest book

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. Humphrey Adventures (10 books by Betty G. Birney) lands at a grades 3–4 reading level, with average content intensity 1/5. Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.

The reading-order table above lists every book with per-volume reading level, age and intensity ratings 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.

Similar reading level, content intensity and themes.

Questions about the Humphrey Adventures series

What reading level is the Humphrey Adventures series?
Humphrey Adventures books are at a grades 3–4 reading level (average grade level 4.1), and HootRated recommends the series for ages 9–12. There are 10 books in the series.
What order should I read the Humphrey Adventures books?
Series numbers aren't available for most Humphrey Adventures books, so HootRated lists them by publication date: The world according to Humphrey (2004); Friendship according to Humphrey (2005); Trouble According to Humphrey (2007); Adventure According to Humphrey (2009); School days according to Humphrey (2011); and 5 more.
What age is the Humphrey Adventures series appropriate for?
HootRated recommends Humphrey Adventures for ages 9–12. Content is gentle (HootRated intensity 1/5). Intensity stays consistent across the series, so a reader who can handle the first book can generally handle the rest.