Warren is excited because it's mock test day, much to the annoyance of the other students! In the corridor, Charleigh becomes part of Rolf Smorgasbord's latest art installation and supply teacher Mr James tries his hardest to hide the fact that he's clearly a secret agent. He doesn't succeed!

A special episode dedicated to the legend that is Mr Christopher! We celebrate his unique teaching style and look back at the highs and lows of his teaching career. We hear from former pupils from both Dockbridge High and Quayside Academy, who tell us how he inspired them, and find out what happened to Mr Christopher's loyal assistant, Martin. when he left school.