Jarrett Krosoczka Books

The force oversleeps

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"Victor Starspeeder is back at Jedi Academy for year two, but it's not going the way he'd planned. He was thrilled about Drama Club and hoped to get the lead in this year's musical... But a new kid...

Lunch Lady y el sustituto cibernetico

By Jarrett Krosoczka

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The school lunch lady, a secret crime fighter, uncovers an evil plot to replace all the popular teachers with robots. Lunch Lady es una heroína que se hace pasar por la señora de la cafetería y en...

Platypus Police Squad The Frog Who Croaked

By Jarrett Krosoczka

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Platypus Police Squad

By Jarrett Krosoczka

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Lunch Lady and the field trip fiasco

By Jarrett Krosoczka

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Lunch Lady, a secret crime fighter, accompanies the Breakfast Bunch on a class trip to an art museum, but when Dee, Hector, and Terrence begin to think there is something strange afoot, she suspect...

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.

Lunch Lady and the Bake Sale Bandit

By Jarrett Krosoczka

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From the author of National Book Award finalist Hey, Kiddo.The Breakfast Bunch is excited for the upcoming bake sale—and the best part is that it's raising money for an awesome field trip. But whe...

Lunch Lady and the Field Trip Fiasco

By Jarrett Krosoczka

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From the author of National Book Award finalist Hey, Kiddo.Lunch Lady and the Breakfast Bunch are on a school field trip to a famous art museum. But while Lunch Lady is busy taking in all the cultu...

Lunch Lady and the Mutant Mathletes

By Jarrett Krosoczka

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From the author of National Book Award finalist Hey, Kiddo.The Breakfast Bunch have joined the mathletes team, and are all set to win the championship trophy for Thompson Brook Elementary School—th...

Lunch Lady and the Picture Day Peril

By Jarrett Krosoczka

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From the author of National Book Award finalist Hey, Kiddo.It's picture day at Thompson Brook, but the students are plagued by a freak acne epidemic. While the Breakfast Bunch scrambles to put thei...

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.