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In No Brainer , book 18 of the Diary of a Wimpy Kid series from #1 international bestselling author Jeff Kinney, it’s up to Greg to save his crumbling school before it’s shuttered for good.

Up until now, middle school hasn’t exactly been a joyride for Greg Heffley. So when the town threatens to close the crumbling building, he’s not too broken up about it.

But when Greg realizes this means he’s going to be sent to a different school than his best friend, Rowley Jefferson, he changes his tune. Can Greg and his classmates save their school before it’s shuttered for good? Or is this the start of a whole new chapter for Greg?

224 pages, Hardcover

First published October 24, 2023

2510 people are currently reading
4953 people want to read

About the author

Jeff Kinney

403 books17.9k followers
Jeff Kinney is an author of children's books including Diary of a Wimpy Kid book series. Jeff was born in College Park, Maryland, in 1971 where he created a comic strip called "Igdoof."He also created the children's website 'Poptropica'.

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5 stars
6,722 (53%)
4 stars
3,354 (26%)
3 stars
1,823 (14%)
2 stars
475 (3%)
1 star
181 (1%)
Displaying 1 - 30 of 1,048 reviews
Profile Image for Fred Forbes.
1,136 reviews86 followers
October 30, 2023
Yeah, I know, reading age 8-12 but in for a penny, in for a pound. Been reading these as they come out for a long time, despite my 77 years. Partly because of the appeal to my sophomoric sense of humor, partly because it doesn't seem to me that middle school was that long ago. Maybe reading these causes that! At any rate, a good addition to the series and quite a few laugh out loud moments. Enjoy!
Profile Image for Sheri.
1,353 reviews133 followers
May 19, 2024
Definitely one of the least amusing books in the series, I almost quit at the halfway point as I wasn't finding it funny or engaging. Kinney tries too hard to bring in current controversial topics and fit them into a school setting, but it's often a far reach and a far-fetched likelihood. It felt like the start of many ideas that weren't enough to carry a full book, but also didn't come together collectively and cohesively to amuse and entertain.

I imagine it's incredibly difficult to come up with fresh and safe ideas in this limited setting, but I'm not sure that all of the tongue-in cheek mocking will land with school-age readers. A return to the style of the earliest books would be much appreciated by readers of all ages.
Profile Image for Jessica.
Author 25 books5,911 followers
November 8, 2023
Love how this covered everything from book bans to "healthy" school lunches to budget cuts and basically everything plaguing schools today. Kids will find it hilarious, but parents/teachers/librarians will find an edge to the humor, and more than a little "it's funny because it's true which makes it almost uncomfortable to laugh at."
Profile Image for emily.
261 reviews
October 26, 2023
riveting, profound, philosophical, never been done before
48 reviews1 follower
March 22, 2024
Really enjoyed this one and how behind his school system was.
14 reviews
December 14, 2023
never thought i'd be saying this about a diary of a wimpy kid book but this was honestly a chore to get through
Profile Image for Reilly Zimbric.
296 reviews21 followers
December 18, 2023
The end of an era.
Bye Greg, I’ll see you when the next book comes out.
Profile Image for Dan.
435 reviews3 followers
June 29, 2024
This focused more on one specific situations in Greg’s life rather than a more balanced approach that the earlier books had, but I get it, considering Kinney’s been writing these for 15+ years. I have friends who are teachers, so this particular book was a little more depressing than Wimpy Kids usually are. Reminded me a bit of Idiocracy at the end. Really liked that Kinney wasn’t capitalizing a word or two every page, too; that’s usually distracting.
Profile Image for Ben Cela.
164 reviews20 followers
October 26, 2023
Normally I don't leave reviews on Diary of a Wimpy Kid books but I just have to say how it amazes me how consistent Jeff Kinney is! Like how have ALL 18 of the Diary of a Wimpy Kid been funny? What's even more amazing is that the eighteenth book in the series might be the funniest one. Genuinely laughed-out-loud so many times during No Brainer! Also, Jeff Kinney sprinkling in commentary about AI, flat earth theory, and capitalism??? KING
Profile Image for Shadyside Library.
345 reviews120 followers
October 25, 2023
I enjoyed seeing Greg go back to school and continue living the awful life of a middle schooler… but this time at a school that is falling apart! hilarious! Although, I do wish we got to see more of the OG characters like Rodrick and Rowley. This book truly is all about Greg.
Profile Image for رزی - Woman, Life, Liberty.
338 reviews121 followers
July 24, 2024
یه کتابدار لطف کنه نسخه‌ی فارسی این کتاب رو اضافه کنه

این جلد درباره مدرسه عجیب گرگ هفلیه که با اونهمه ماجرای عجیب دیگه یکم اذیتت می‌کنه چون طنزش زیاده از حد مبالغه کرده و دیگه خنده‌دار نیست. شایدم اصلاً دراماهای مربوط به مدرسه برای من خنده‌دار نیست. نمی‌تونم با highschool-dramaهای آمریکایی ارتباط بگیرم وقتی خودم توی مدارس ایران بزرگ شدم.
Profile Image for Catherine Titcomb.
85 reviews
November 16, 2023
it didn’t wrap up the series at the end so i’m a little nervous jeff is still writing. i do want to thank my followers in this journey for believing in me and cheering me on. 💪
Profile Image for Alyssa Y.
125 reviews1 follower
November 5, 2023
hands-down excellent. both a riveting first-person story and an intelligent commentary on the lack of funding in public schools.
also touches on consumerism, AI, fake news, meritocracy, and more.

this is the severance for middle schoolers, from the narrator we all know love and trust: GREG HEFFLEY
1 review
November 2, 2023
no story line

I have read all the books and they have all been 5 star ⭐️⭐️⭐️⭐️⭐️ but this one had no story line or point of reference I have lived the series can’t wait till the next one comes out
Profile Image for James Musial.
103 reviews
November 21, 2023
no brain is right. rowley has one appearance in this book. rodrick and manny featured even less. totally lost the plot
Profile Image for Katerina.
250 reviews13 followers
December 13, 2023
Another fun filled installment of Greg Heffley’s middle school adventures. This time his school is in trouble due to kids’ low grades and everyone is looking for ways to prevent it from closing. How will the kids/teachers/cooks do it this time?

Highly recommend! 😊📚
Profile Image for Nishana.
88 reviews
January 26, 2024
3.5 stars

honestly this was a great time.

one thing i loved most about this instalment in the series is how it integrates real life topics and issues like book banning, school budget cuts, classism and capitalism (yes im serious). of course, this is done in the most diary of a wimpy kid way possible, which was exaggerated and incredibly unserious. whilst touching on these issues in a very surface level manner, i still think it goes a long way for an 18th novel in a children's comedy series. it was done in such a fun way and i loved it.

the only issue i had with this book is the lack of focus on greg and the supporting characters. especially so far into the series, i truly feel that the characters are the heart of this series and their lack of presence felt like such a missed opportunity. it's actually baffling thinking about how little rowley, rodrick and manny appeared in this book.

overall, this was a quick and enjoyable read! as always, i'll definitely be tuning in to the next one.
Profile Image for  Brittny's Book Talk.
174 reviews678 followers
June 16, 2024
3.5

The book definitely picked up towards the end, but overall it was rather boring. I usually love reading about the family dynamic, and even the friend dynamics, but this solely focused on real world issues put into a way kids would understand. And most of the book wasn't even ABOUT Greg it was what Greg was SEEING.

Let's keep in mind, I have been reading these since 2nd grade and now just graduated high school. Long time commitment to this series, but I think Diary of a Wimpy Kid might be nearing the end of it's days. Because, honestly the last really good book in the series was like 5 books ago.
Profile Image for Mobina.
163 reviews5 followers
April 26, 2025
یکی از فان ترین جلد های این مجموعه بود. کلا از بچگی مجموعه بچه چلمن رو میخوندم و به نظرم مجموعه ای هس که هرکس باید بخونه تو زندگیش چون خیلی بامزه و حال خوب کنه
Profile Image for Prabhjot Kaur.
1,133 reviews217 followers
April 29, 2024
Greg's school doesn't have any funding left for anything basically and the school board is doing anything and everything they can to get some cash. They invited all the businesses in the area to advertise wherever they can from the floors to the toilet sinks. They even invited people to re-name the school for money. If there are no takers then the school would be shut down and sadly Greg and Rowley will have to go to separate schools. What would happen when Greg has to go to a new school?

I wasn't expecting much after the previous read in the series but surprisingly I loved this. All the issues that the schools are facing today were mentioned but with a lot more clarity and hilarity. Greg's family wasn't really there but the concept was a specific one so that's understandable. As usual, the sketches were amazing.

4 stars
Profile Image for maelle .
80 reviews2 followers
March 13, 2025
This one was less fun than the others, mostly because for almost the whole book it revolves around the school finding absurd ways to get money and it only seemed like a succession of events that got more and more unbelievable. Like, students just casually bringing digging objects and digging in the lockers’ wall …? Making a middle schooler principal for the day and expecting him to resolve the problems…? I know credibility isn’t the thing you’re looking for when reading this series but this one took it a bit too far to my liking, we were running in circles and it became more and more ridiculous. It became a bit better at the end when we finally got to talk about other things and saw other characters, but it was really short. Sad that we didn’t get to see more of his family as well. I think it made some good points on serious issues tho.
Profile Image for ✧˚.s̶o̶f̶i̶a̶ৎ──.
32 reviews30 followers
June 18, 2025
⭒˚.⋆ 💚⋆⭒˚🧠.⋆˚. ╰┈➤2.5⭐️


-it was okay , didn't hit the 'same' obviously since have grown out . but maybe it's time to move on?
-still a quick refreshing read , a bit nostalgic , don't remember the last time read the last book....*sighs* ,
-time is so terrible.
Profile Image for Maciej Skulimowski.
86 reviews8 followers
October 18, 2025
Kolejny tom absurdalnych przygód Grega - kolejne 5/5. Niesamowite to jest dla mnie, że Jeff Kinney napisał łącznie już ponad dwadzieścia książek w tej serii, a nadal mi się to nie przejadło i bawię się świetnie.
Profile Image for Hitesh.
558 reviews21 followers
December 5, 2024
I wanted to read something light and funny, after reading so many crimes.

Good one, with a good message at the end.

Liked it.
Profile Image for el (celestialbronz).
567 reviews185 followers
January 12, 2024
FINALLY back to school again, after the last few books set mainly outside of school, even though there's almost no appearance of Rowley. It was quite fun and absurd as usual lmao.
Displaying 1 - 30 of 1,048 reviews

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