The Legacies by Jessica Goodman

So it’s not surprising when Excelsior Prep seniors Bernie Kaplan, Isobel Rothcroft, and Skyler Hawkins are nominated as Legacies; their family pedigrees have assured their membership since birth—even if they're all keeping secrets that could destroy their reputations. But scholarship kid from Queens Tori Tasso? She’s a surprise nominee, someone no one saw coming. Tori’s never fit in this world of designer bags, penthouse apartments, and million-dollar donations. So what did she do to secure her place?

The night of the Legacy Ball is supposed to be the best night of these seniors’ lives, a night of haute couture, endless champagne, and plenty of hushed gossip.