The snitch

"There's nothing worse than being a tattletale . . . That's what 10-year-old Sophie Washington thinks until she runs into Lanie Mitchell, a new girl at school. Lanie pushes Sophie and her friends around at their lockers, and even takes their lunch money. If they tell, they are scared the other kids in their class will call them snitches and won't be their friends. And when you're in the fifth grade, nothing seems worse than that. Then a classmate gets seriously injured and Sophie needs to make a decision: fightback, or snitch"--OCLC.