Annotation: Nurse Penny is the coolest school nurse around, and she can handle anything, from bee stings to stomach aches. But then one morning the kids notice she isn't wearing her usual smile. Why? When she holds a surprise school assembly to talk about head lice, she explains everything there is to know about those creepy-crawly critters'what they look like, how to avoid them, and how to get rid of them. But can Nurse Penny handle telling the whole school her secret?