Jarrett Krosoczka Books

Punk Farm on tour

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While Farmer Joe is at the National Tractor Society Conference in Reno, his animals go on tour in a broken-down van, performing as the band called Punk Farm.

Lunch lady and the cyborg substitute

By Jarrett Krosoczka

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The school lunch lady is a secret crime fighter who uncovers an evil plot to replace all the popular teachers with robots.

Lunch Lady and the League of Librarians

By Jarrett Krosoczka

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The school lunch lady, a secret crime fighter, sets out to stop a group of librarians bent on destroying a shipment of video games, while a group of students known as the Breakfast Bunch provides b...

Lunch Lady and the author visit vendetta

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Lunch Lady and the summer camp shakedown

By Jarrett Krosoczka

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When the crime-fighting school lunch lady works as the cook at summer camp, she investigates the mystery of the legendary swamp monster.

Lunch Lady and the Schoolwide Scuffle

By Jarrett Krosoczka

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From the author of National Book Award finalist Hey, Kiddo.Lunch Lady and Betty have been unceremoniously cut from the school budget, and the timing couldn't be worse—the villains from all nine of...

Annie Was Warned

By Jarrett Krosoczka

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Ollie the purple elephant

By Jarrett Krosoczka

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Ollie the purple elephant is delighted to move into the McLaughlin family's New York City apartment, but their cat, Ginger, is not pleased and devises a plan to send Ollie away with the circus.

It's Tough to Lose Your Balloon

By Jarrett Krosoczka

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From the author of National Book Award finalist Hey, Kiddo.Lost balloons. Melted ice cream. Babysitters. Life as a kid can be pretty daunting. But don’t let these troubles get you down. With the ri...

It's tough to lose your balloon

By Jarrett Krosoczka

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Illustrations and simple text suggest ways see the positive side of difficulties, from losing one's balloon to being left with a new babysitter.

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.