Episode #1.1 - S1-E1
Character mistake: When Mrs Munroe is calling out the pupils' names in the hall Alan's surname is Turner, but according to the credits at the end of this episode his surname is Hargreaves.
Episode #1.7 - S1-E7
Character mistake: When Mr Mitchell is counting the votes, he says that 23 pupils voted - he reveals Ann Wilson got 11 votes, Peter Jenkins 7 votes, Michael Doyle 3 votes plus 2 blank votes and 1 for someone's budgie which equals 24 votes.
Episode #1.9 - S1-E9
Character mistake: When Mr. Mitchell is at the civic centre looking for Trisha who is playing truant, he asks the receptionist if she has seen her and describes Trisha as having long blonde hair. Trisha has brown hair.
Character mistake: Miss Summers tells Mr Sutcliffe that she has to check on some our third year friends meaning Jackie Heron, Brenda and Lucy. But these three girls are in fact fifth years.
Episode #3.8 - S3-E8
Character mistake: During the mime class when Mr. Sutcliffe asks Pogo Patterson what he's doing, he calls him Jones.
Episode #4.2 - S4-E2
Character mistake: In the meeting, Susi says that Penny Lewis and Rosie Spencer got in trouble during the previous year for writing a libelous article in the school magazine about Micky Doyle, but it was actually Penny and Chris Dukeson that got into trouble about that article about Doyle.
Character mistake: Gripper tells Georgie that he and Denny are bunking off their next lesson to go to the cafe, but they do actually go to their next lesson where they find Randir writing on the blackboard.
Episode #7.1 - S7-E1
Character mistake: After Zammo has walked Jackie to Brookdale he is chased off by Gluxo. During the chase Gluxo falls over he calls out "you wait, I'll have you Mcguire." No way for him to know Zammo's name when this is the first time they've seen each other and they go to different schools. (00:08:27)
Character mistake: In episode 12 Robyn Stone celebrates her fifteenth birthday, but in this episode while she is in Mary's caravan watching the TV news report about her disappearance, the news reader gives her age as fourteen.
Character mistake: When Colin points out Tarquin out to Arnie and Wayne he tells them his name is Tarquin Fitzpatrick, but when Tarquin introduces himself to Mr. Robson he says his name is Tarquin Montgomery.