There's A Pig In My Class!

Pig was the loneliest pig in the world, locked in his pen while the children played in the schoolyard behind him. But suddenly, Pig can't believe his own curly tail! The children have disguised him in a sweater, pants, and a hat; and he's made it inside their preschool classroom. Everyone is having a blast, but how can Pig's new friends keep the teachers from finding out about him?