"How to Be Perfect" is the eighteenth episode of the fourth series and the sixty-fifth episode overall of The Dumping Ground. It premiered on 18 November 2016.
- Kasey McKellar as Bailey Wharton
- Yousef Naseer as Joseph Stubbs
- Stacey Liu as May-Li Wang
- Jethro Baliba as Archie Able
- Reece Buttery as Mo Michaels
- Connor Byrne as Mike Milligan
- Miles Butler-Hughton as Tyler Lewis
- Amy-Leigh Hickman as Carmen Howle
- Hannah Moncur as Chloe Reeves
- Annabelle Davis as Sasha Bellman
- Lewis Hamilton as Ryan Reeves
- Ruben Reuter as Finn McLaine
- Sarah Rayson as Floss Guppy
- Nelly Current as Toni Trent
- Gwen Current as Billie Trent
- Mia McKenna-Bruce as Tee Taylor
- Kia Pegg as Jody Jackson
- Akuc Bol as Kazima Tako
- Sage as Mischief
- It is revealed that Kazima has been allowed asylum.
- First appearance of Archie.