Plot hole: In this episode Mrs McLusky is horrified when Mr Sutcliffe suggests staging a girls versus boys contest and tells him that the school does not want to promote sexual inequality, but two episodes earlier (4-16) Mrs McLusky wouldn't let Trisha Yates choose technical drawing as an option, as it was classed as a boys' subject.
Visible crew/equipment: In the final scene in the headmaster's office when Mr Mitchell says "I know its your decision headmaster" the microphone is in shot at the top of the screen.
Plot hole: Doyle steals Alan's judo suit when he inadvertently leaves it in the corridor. Doyle tells Robo that he will leave it in the bike sheds overnight and will sell it to Junky Mead tomorrow. The next day Tucker arrives at school having bought the suit and says he saw it in Junky Mead's shop yesterday and bought it on his way in to school that morning.
Revealing mistake: When the drunk Andrew is asleep in the boys' toilet cubicle, the wall shakes when Tommy shuts the outside door when Alan and Justin leave.
Episode #4.1 - S4-E1
Continuity mistake: The fire alarm sounds and the school is evacuated, three shots are shown of pupils running down the same staircase - in every shot it is the same pupils descending the stairs three times.
Revealing mistake: Doyle is making a chair in woodwork, but as he is fitting one of the legs he hits the chair with a hammer too hard and splits the wood then gets a telling off from Mr Hopwood, the wood was already split before Doyle hit it.
Revealing mistake: When Mr Scott storms into the woodwork room and starts attacking Mr Hopwood, Duane and Stewpot rush out to fetch Mr Baxter and Stewpot tells Pogo to stay. Pogo then falls backwards against the wall and the whole set moves.
Episode #1.7 - S1-E7
Visible crew/equipment: When Peters is telling Mr Mitchell about Doyle and Robo bullying him into voting for Robo a shadow of the boom mike is seen on the wall.
Visible crew/equipment: Colin and Nathan intervene when the two older bullies are being abusive to Spencer, Calvin and Anika. After the bullies have gone a boom mike shadow can be seen on Colin's coat.
Continuity mistake: When Arnie and Sam are following "animal man"'s blue van on their bikes down the busy road the vehicles on the road around the van change between shots.
Visible crew/equipment: Martha Jordan enters the room when Mr Robson is interviewing Brian about the assault on Jessica. As Brian leaves the room she walks towards Robson and a shadow of the camera and a sound man holding a boom mike can be seen on her green jacket.
Continuity mistake: When Justine intervenes when the grid iron crew are ganging up on Tegs, one crew member wearing a yellow T shirt with the number 55 under an unbuttoned white shirt drops his black helmet, which Ted picks up. When the crew run after Justine and Tegs as they run off, next shot on the stairs "number 55" is wearing the helmet, then as the crew chase after Justine and Tegs, as they leave through a fire door "number 55" is holding his helmet in his right hand.
Visible crew/equipment: There is a boom mike shadow on Mr Hopwood's shirt when he says "come on you lot, inside" to Pogo, Stewpot, Gripper and Denny, after Gripper and Denny threaten Pogo and stewpot in the corridor.
Episode #4.7 - S4-E7
Visible crew/equipment: After Rosie and Suzi come out of Mrs Mccluskey's office, as Suzi says "hey Rosie" there is a boom mike shadow on the wall to the left of the door, then when Suzi goes back into Mrs Mcclusky's office there is another boom mike shadow on the wall.
Continuity mistake: In the canteen Doyle is next to Tucker, and puts his plate on the table before sitting down. The angle changes and Doyle puts his plate down a second time.
Visible crew/equipment: When the exhibition is being set up in the hall there is a boom mike shadow on the wall when Mr Mitchell walks over to speak to Trisha and Cathy.
Episode #3.1 - S3-E1
Continuity mistake: In the second scene when Tucker, Alan and Dukesie are waiting for the bus, a London transport official removes the bus stop sign and tells them that the bus route has been redirected along another road. As the angle changes the parked vehicles in the road have also changed.
Episode #2.7 - S2-E7
Visible crew/equipment: When Mr Sutcliffe returns to his class after telling Mr Llewellyn that he has a problem with Simon Shaw, a boom mike shadow can be seen on the back of the heads of the two pupils nearest the camera.
Episode #2.1 - S2-E1
Visible crew/equipment: In the changing room after the football match, when Joey Singer and Simon Shaw are arguing a shadow of the camera can be seen on the wall behind Simon.
Episode #1.3 - S1-E3
Visible crew/equipment: Just after Mr Mitchell tells Tucker to move back to the desk he should be sitting at, a boom mike shadow can be seen on Ann Wilson. (00:05:00)
