Take Three Girls — Cath Crowley

Three authors. Three appealing and relatable characters. One smart YA novel about a trio of unlikely friends who team up to take down the school cyberbully. 
 
“Mean stuff spreads so fast. One click. Post. Send. Share. Online bullying = sometimes suicides, so all the private schools have strategies for dealing with it. At St Hilda's, it's Wellness classes. We greeted the idea with genuine enthusiasm. Why not? Everyone loves the chance to slack off.”
 
Popular Ady seems cool and confident at school, but at home her family is falling apart. Brainiac Kate wants to pursue her dreams of playing music, even if it jeopardizes her academic scholarship. And swim champ Clem finds herself disenchanted with the sport . . . and falling for a very wrong boy. When these three very different girls are forced to team up in a wellness class, they're not too pleased. But over time, they bond -- and when they're all targeted by PSST, a website that dishes out malicious gossip and lies, they decide to take a stand, uncover the culprits, and fight back. But can they really fix a broken system? With each girl's story told by a different author, as well as intriguing questionnaires from the wellness class included throughout, this empowering novel explores today's most relevant topics -- from cyberbullying and fat shaming to drug abuse and financial stress.