Diary of a Wimpy Kid: Partypooper (Book 20)
THE BRAND-NEW, HILARIOUS WIMPY KID BOOK
by Jeff Kinney
Random House 2025
Great fit for 5th grade
Reading level and content both target 4th–8th grade · ages 9–14
Bookshop.org supports independent bookstores. As an Amazon Associate we earn from qualifying purchases. Retailer links may be affiliate links.
Genre
Themes
- friendship
- family dynamics
- popularity and social status
- embarrassment
- expectations vs. reality
- growing up
- school life
- humor and mishaps
About this book
Greg Heffley is determined to throw himself the best birthday party ever—until the guest list, decorations, and surprises spin wildly out of control. Told in Greg’s signature diary style with cartoons on every page, this laugh-out-loud story captures the chaos of parties, family dynamics, and middle school expectations. Perfect for ages 8–12, it’s fast-paced, relatable, and packed with humor kids love. Fans of realistic, illustrated comedies will dive right in and keep turning the pages.
Setting: suburban middle school and Greg’s neighborhood/home, present day
Frequently Asked Questions
Is Diary of a Wimpy Kid: Partypooper (Book 20) right for my child?
Yes — Diary of a Wimpy Kid: Partypooper (Book 20) is a great fit for 5th grade. The reading level is AR 5.7, which is typical for 5th grade. The interest level is rated Middle Grades (4–8), meaning the themes and content are designed for ages 9–14 (4th–8th grade). Themes include friendship, family dynamics, popularity and social status.
How long does it take to read Diary of a Wimpy Kid: Partypooper (Book 20)?
At a typical 5th grade reading pace, Diary of a Wimpy Kid: Partypooper (Book 20) takes around 2.1h to finish. The book has 21,000 words. Slower or faster readers may vary significantly.
Does Diary of a Wimpy Kid: Partypooper (Book 20) have an AR quiz?
Yes — Diary of a Wimpy Kid: Partypooper (Book 20) has an AR quiz available, worth 3 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.
What grade level is Diary of a Wimpy Kid: Partypooper (Book 20)?
Diary of a Wimpy Kid: Partypooper (Book 20) has an AR reading level of 5.7, which places it at a 5th grade reading difficulty. The interest level is rated Middle Grades (4–8) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.