Grown-ups never forget the annual bummer that is the end of summer vacation. Getting back into the morning waking and dressing routine may be tough on kids. But the expenses associated with back-to-school time translate into a special brand of stress reserved just for parents. The average person with schoolchildren this year will spend more than $680 on back-to-school needs, according to the National Retail Federation. Those costs include about $246 on clothes, $217 on electronics, $129 on shoes, and $95 on school supplies.