Two items from the school I went to between 7 and 14. I believe the first originated there, and it remains unfinished. The tunes should be obvious.

Say what you will, school dinners make you ill,
And Davy Crockett dies of shepherds' pie.
All school din-dins come from pig-bins,
Why, O why?

(At the end of each day, the pig men came and collected waste food in galvanised metal dustbins, hence pig-bins.)

Oh, the Yellow Rose of Texas,
The Man from Laramie,
Went to Davy Crockett's,
To have a cup of tea.
The tea was so delicious,
They had another cup,
And left poor Davy Crockett,
To do the washing up.

Penny