ATLANTA–(BUSINESS WIRE)–SONIC® Drive-In donates a portion of proceeds from every drink purchase to support local public schools through the brand’s Limeades for Learning® initiative, and this October, SONIC is going all-in on reading for National Book Month and making it easier for students to get books both inside and outside the classroom. Through partnerships with Little Free Library and education non-profit DonorsChoose, SONIC invites guests to get involved by helping to “Fill Every Shelf