Read the first part of the story.
The Forgotten Wand

Fern and Daisy had just finished a lesson on the dangers of magic spells on frogs. They were sitting alone in the now-empty classroom. They hadn’t copied notes from the Headmaster Elf’s lesson fast enough, so he had asked them to stay late to catch up.
‘I’m so bored,’ Fern moaned. ‘I thought Elfin Magic School was going to be fun, but so far we haven’t learned any magic at all. All we do is listen to Headmaster Elf talk about magic safety.’
Daisy nodded. ‘If I hear one more word about why magic spells are dangerous, I’m going to scream!’ She glanced towards Headmaster’s desk, and then she did give a little scream.
‘What is it?’ cried Fern.
‘Look! Headmaster forgot to lock his desk.’ Daisy pointed. Sure enough, Headmaster’s magic wand was poking out from his desk drawer.
Fern’s eyes widened, and then she grinned. ‘Are you thinking what I’m thinking?’