Back-to-school shopping is more than a checklist; it is a ritual shaped by identity, nostalgia, family decisions, and economic pressure. Patti Williams, an associate professor of marketing at the Wharton School, explains why the back-to-school season matters so much to parents, students, retailers, and manufacturers. She discusses how families make purchasing decisions, why this shopping period feels emotionally meaningful, and how retailers prepare for one of the most reliable moments on the retail calendar.