Was later remade in the United States as What a Country (1986).
How about a toast for Ali and Su-Lee?
Giovanni Capello: No, sorry, we have no toast, only biscuits.
Jeremy Brown: No, I mean a toast for Ali and Su-Lee.
Giovanni Capello: We have no toast for them, either!
In the first episodes, we can see that the number of the classroom is 5, while later on number 7 appears on the door.
The series title is drawn by an animated Mr Brown on a blackboard. The intertitles have him write "End of Part One" and "Part Two", and at the start of the closing credits he cleans up the blackboard signifying the end of a class.