How to save big on back-to-school shopping By: CNBC.com News July 26, 2017 at 14:11 PM EDT The average back-to-school shopper will spend $688 this year. Parents, don't fret. Two things can help you save big: when you shop and which card you use. Read More >> Related Stocks: Barclays Plc ADR Citigroup JPMorgan Chase & Co Target Corp