Lin Oliver & Henry Winkler 
Hank Zipzer 7: The World’s Greatest Underachiever and the Parent-Teacher Trouble [PDF ebook] 

The seventh book in the New York Times bestselling series about the hilarious adventures of a cheeky, loveable hero.Faked letters, forged signatures … and lies. Hank will stop at nothing to prevent his mum and dad going to parents’ evening. Sometimes, though, help comes from the oddest of places, and a rock concert teaches Hank that being good at school isn’t the only way to make your parents proud.