What do elves learn in school?

The elf-abet

Why did Santa's elves start a union at the North Pole?

Because they wanted to clause for better working conditions

Why did Santa need an extra large desk at the North Pole?

He had a lot of Claus-es in his contract.

Why did Santa's elves start taking extra breaks at the North Pole?

Because they wanted to sleigh the competition in the relaxation department