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.
