Sarah and Medusa walked towards the classroom door. Sarah, since she's short,  had to stand on her toes again. They peeked through the window in the classroom door and saw the scariest looking wolves outside,  hungrily tearing meat of a body.

'The principal has been quiet all this time... could this be him?', Sarah thought to herself, but it was to terrible to think about it any further.

As she tried to find Billy with her eyes,  her question was answered. There was Billy, on top of one of the lockers and next to him, was the principal.

'Who is that then?', both of them  wondered.

"Chicken"

"What? " asked Sarah looking confused at Medusa.

"Chicken ", repeated Medusa and pointed towards the meat. "That's what they're eating."

'Oh! Thank goodness', she thought. 'I forgot we had to bring chicken for the experiment today. '

"But why is Billy screaming?", she asked no one in particular.

Billy saw Sarah and Medusa  peeking out the window at them.
He motioned with his hand towards them and held up a sign saying :' GO! I'M DISTRACTING THEM. TAKE EVERYONE AND GET OUT OF HERE! '

The girls immediately understood and slipped out the classroom, carefully, making sure they don't disturb or grab the wolves attention.
They ran across the hallway once they were out of the wolves earshot and headed towards the science laboratory.