Detention!
It was only when Stacey felt something hit the back of her head from behind, that she spoke up.
"Ow!" she said, turning around to glare at Sheila, who was two rows behind her. She bent over to pick up the obstruction, and saw it was a note with 'Marty' written on the outside. She glanced up at Sheila, contemplating what to do. Marty sat in front of her, and she could pass it on, but what would be the fun in that?