Continuity mistake: In some episodes Grange Hill has its own on site swimming pool but in others it hasn't, and the pupils have to go to the local leisure centre.
Continuity mistake: Miss Peterson's first name changes three times, in 3-5 she is called Suzy, in 3-11 Mr. Hopwood calls her Wendy, and in 4-10 Mr. Sutcliffe calls her Val.
Continuity mistake: In series 1 Alan's surname is Hargreaves, but in series 2 to 5 his surname changes to Humphries.
Episode #1.1 - S1-E1
Visible crew/equipment: After Mrs Munroe has finished calling out the names, Tucker is left standing alone in the hall. Mrs Munroe says "didn't I call your name out" while she leaves the stage and you can see a crew member in the bottom right hand corner of the screen.
Episode #1.1 - S1-E1
Visible crew/equipment: There's a boom mike shadow on the wall behind Tucker when he fires the first elastic band.
Episode #1.1 - S1-E1
Continuity mistake: When Ann Wilson is asking Jackie Heron for directions, the position of Ann's hair changes between shots. When seen from her front Ann's hair is behind her ears, but when viewed from behind Ann's hair is covering her ears.
Episode #1.1 - S1-E1
Visible crew/equipment: As Justin's fathers car pulls out of the driveway you can see the film crew reflected in the side of the car.
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 #1.2 - S1-E2
Continuity mistake: Early in this episode Mr Foster tells Tucker off after jumping on Alan and David while coming into the school, the people walking along the road outside the school disappear between shots.
Episode #1.2 - S1-E2
Continuity mistake: As Mr Mitchell is driving through the school gates he has to brake sharply to avoid Benny Green who is playing football in the car park. Mitchell gets out to tell Benny off, the angle changes and the car has moved forward.
Episode #1.2 - S1-E2
Continuity mistake: When Ann hands over her hockey boots to Tucker she gets them off too quickly, and you only actually see her remove one boot.
Episode #1.2 - S1-E2
Visible crew/equipment: Boom mike shadows are on the wall behind Tucker in the changing room when Tucker mocks Justin's posh accent and again behind Tucker when he and Benny are talking about that night's football trials.
Episode #1.2 - S1-E2
Visible crew/equipment: In the playground when Tucker and Benny are telling Mr Mitchell about Benny's lack of football boots, when the camera is on Benny you can see its reflection in the window behind him.
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)
Episode #1.3 - S1-E3
Factual error: As Trisha and Judy leave the class, Mr Mitchell says "see you tomorrow." After which, Trisha asks Judy, "Did you see Top of the Pops last night?" Top of the Pops was shown on a Thursday night when this episode was shown in 1978, making this day Friday - there is no school on Saturdays.
Episode #1.3 - S1-E3
Continuity mistake: When Judy is walking past the shops, parked behind her is a pick up truck full of junk. In front of it is a grey Triumph 2000 estate and a white Citroen, but seconds later when Judy is ambushed by Jackie Heron's gang, the triumph and Citroen have gone, and there are milk floats parked in front of and behind the pick up truck.
Episode #1.4 - S1-E4
Visible crew/equipment: There is a boom mike shadow on the wall in the entrance passage when Tucker, Alan, Benny and Tommy return to the swimming pool to look for Benny's medal.
Episode #1.4 - S1-E4
Revealing mistake: When Justin is dropped off out side the school in his father's car you can see Benny behind the fence waiting for his cue.
Episode #1.6 - S1-E6
Visible crew/equipment: In the POV shot where Justin is being wheeled towards Tucker, a lighting rig is visible on the right-hand side of the screen.
Episode #1.6 - S1-E6
Continuity mistake: When Justin is seen falling from the wall, it isn't the same wall he has just climbed up.
