Jeff Kinney wrote Diary of a Wimpy Kid: Old School, the tenth book in the series. . The book was published by Amulet Books in 2015 and has 217 story pages (224 altogether). The story revolves around 14-year-old Greg Heffley, who is in 9th grade and struggles to live without electronics. The book talks about how Greg’s mother starts a petition to prevent the town from using electronic devices for a weekend, and how Greg tries to adapt to his old lifestyle.