Middle School: From Hero to Zero (Middle School, Book 10) by James Patterson and Chris Tebbetts (Ex-Library HC)

Book 10 of 16: Middle School

After a mostly-successful stint at Hills Valley Middle School, Rafe is excited to visit the incredible city of London with his class. Sightseeing around a foreign country sounds like a blast, until Rafe finds out his roommate is Miller the Killer, bully extraordinaire! Then he's forced to work on a class project side by side with his crush Jeanne Galletta and her too-perfect boyfriend, which might be even worse than rooming with Miller. 

And it's no surprise that Rafe's bad luck follows him across the pond, putting him in one crazy situation after another--all under the watchful eye of his bad-tempered principal. Out of all of his adventures, this trip could prove to be Rafe's most embarrassing yet, undoing everything good he has going for him back home!