But not the lightning bug poster. Emma was bringing that. Katie was carrying her own posters. Katie had left her house really early, so the schoolyard was empty when she arrived. “Perfect,” she said as she pulled a poster out of her bag and taped it to a tree. By the time the other kids got to school, there were posters taped to many of the trees. BE NICE TO MICE! MICE ARE PEOPLE TOO! MICE DON’T BELONG IN SCIENCE PROJECTS! “Hey, who put those up?” Katie heard Mickey ask as he and Zack arrived at school and saw the posters. “Man, Selena’s gonna be mad!” Zack exclaimed. “Yeah,” Mickey agreed. “And when Selena gets mad, things can get ugly.” Katie gulped. That did not sound good at all. Just then, Selena arrived. She took one look at Katie’s posters and frowned angrily. She reached up, and yanked one of them down from the tree. Then she crumpled it up into a tight ball, and threw it in the trash. “Hey—” Katie began. Then she stopped herself, remembering what Mickey and Zack had said.
