Doctor Proctor's Fart Powder

Name: Doctor Proctor's Fart Powder
Author: Jo Nesbø
ISBN: 9781442433076

Age Rating, Reading Level & Content Guide

Who Cut the Cheese?

by Jo Nesbø

Reading Level 4-5 LP · Mild · Physical Ages 9-12 Balanced Read

The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material. Its HootRating code, LP, means mild content, mostly physical.

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About This Book

What if a secret powder could make you fly—just by farting? Imagine teaming up with a quirky inventor and two brave friends to stop aliens, giant snakes, and creepy spiders from taking over your city. But can they save Oslo before the sinister waffle irons strike?

Themes

Humor AdventureInventorsExtraterrestrial beingsFriendship

Quick Assessment

This middle-grade book follows Doctor Proctor and his friends as they embark on a hilarious and imaginative adventure filled with quirky inventions and fantastical creatures. Suitable for ages 9-12, the story blends humor with mild fantastical peril in a way that encourages creativity and fun without heavy content. Parents should note the presence of some mild peril and fantasy violence, but nothing intense or graphic.

Why we rated Doctor Proctor's Fart Powder LP (Mild)

Doctor Proctor's Fart Powder is written at a Level 4-5 reading level across 464 pages. Reading-wise, most kids in grade 6 and up can manage Doctor Proctor's Fart Powder on their own; younger readers can enjoy it with a parent or teacher reading along.

We rate Doctor Proctor's Fart Powder as LP (Mild, mostly physical) because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.

No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.

Thematically, Doctor Proctor's Fart Powder explores humor, adventure, inventors, extraterrestrial beings, and friendship — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
✓ Kids drawn to stories about humor, adventure, inventors.

Maybe not for

! Readers looking for something heavier — this is a gentle, low-stakes story by design.

For Parents

Content Intensity

LP · Mild · Physical

Emotional

Gentle

Physical

Mild ←

Social

Gentle

Thematic

Gentle

Reading the HootRating code: the first letter is the content intensity (C = Gentle · L = Mild · M = Moderate · I = Intense · V = Very Intense); the second, when there is one, is the kind of content that drives it (E = Emotional · P = Physical · S = Social · T = Thematic). Reading level and age range are rated separately. How we rate

Light conflict or tension. Mild peril resolved quickly.

Data confidence: high

Was our "Mild" content intensity rating accurate for this book?