9781496528308 | Stone Arch Books, August 1, 2016, cover price $8.95

9781496528292 | Stone Arch Books, August 1, 2016, cover price $25.32

9780545504904 | Scholastic, August 26, 2014, cover price $9.99

9781407138282 | Gardners Books, August 26, 2014, cover price $15.50

9780606362641 | Reprint edition (Turtleback Books, August 26, 2014), cover price $20.85

9780823421008 | Holiday House, October 30, 2007, cover price $16.95 | About this edition: Three stories star Wilbur and Orville, the Riot brothers, as they rescue a dragonfly from a bully, get into an April Fools' Day joke contest with their mother, and invent make-in-your-mouth macaroni and cheese.

9780823421961 | Holiday House, November 15, 2008, cover price $7.99 | About this edition: Raved "The Washington Post", "If you liked "Captain Underpants", you should try "Snarf Attack", "Underfoodle", and "the Secret Life: The Riot Brothers Tell All," And just when you thought the Riot Brothers couldn't get any wackier or more hilarious, along comes the third book in the series, chock full of even more eye-popping, mouth-foaming missions, games, and sayings.

9781591122210 | Har/cas edition (Live Oak Media, April 1, 2003), cover price $25.95 | About this edition: When a principal loves his school so much that he wants the children to attend classes every day of the year, it's up to his students to show him that free time is a good thing, too.

9780060277369 | Harpercollins Childrens Books, August 1, 2001, cover price $17.99 | About this edition: When a principal loves his school so much that he wants the children to attend classes every day of the year, it is up to his students to show him free time is a good thing, too.

9781591124979, titled "A Fine Fine School" | Pap/com edition (Live Oak Media, October 1, 2004), cover price $19.95 | About this edition: Newbery Medal winner, Sharon Creech's Korean edition "A Fine, Fine School," illustrated by Harry Bliss, translated by Kim Yeul Hi.

9780060007287 | Reprint edition (Harpercollins Childrens Books, January 1, 2004), cover price $6.99 | About this edition: When a principal loves his school so much that he wants the children to attend classes every day of the year, it is up to his students to show him free time is a good thing, too.

9781591122227, titled "Fine Fine School" | Pap/cas edition (Live Oak Media, May 30, 2003), cover price $39.95

9781591122203, titled "Fine Fine School" | Pap/cas edition (Live Oak Media, May 30, 2003), cover price $16.95

9780060277376 | Joanna Cotler Books, August 1, 2001, cover price $17.89 | About this edition: When a principal loves his school so much that he wants the children to attend classes every day of the year, it is up to his students to show him free time is a good thing, too.

9780606296878 | Demco Media, March 1, 2004, cover price $15.85 | About this edition: When a principal loves his school so much that he wants the children to attend classes every day of the year, it is up to his students to show him free time is a good thing, too.

9780613851589, titled "Fine, Fine School" | Turtleback Books, January 30, 2004, cover price $17.20 | About this edition: When a principal loves his school so much that he wants the children to attend classes every day of the year, it is up to his students to show him free time is a good thing, too.