I can add an extra two lines which my grandmother used to sing.

"Ah! We see you (then) at half-past eight,
Slowly creeping to the schoolyard gate,
Tardy Scholar is your name"

I'm not certain what, if any, word goes where I have put (then), it might be 'there' or 'now'.
Perhaps these extra lines will trigger someone else's memory.
She was born c 1886 and I remember her singing it in the 1950's