Whether you are buying pens and pencils at OfficeMax.com or a school bag at eBags, now is a great time to get that back-to-school shopping done. Northwest WorldPerks has launched a "Back-To-School Shopping Spree" promotion and, through Sept. 30, double miles are available at select WorldPerks Mall retailers.

To earn the bonus miles, WorldPerks members must register for the promotion at http://www.nwa.com/offers/B2S. Once registered, start shopping at select WorldPerks Mall retailers and watch the miles pour in. Some of the participating retailers include OfficeMax.com (12 miles per dollar spent), Rosetta Stone (20 miles per dollar spent) and Things Remembered (eight miles per dollar spent). Posting of the double miles will take place at the time of your transaction and will be listed on your statement as "WorldPerks Mall Back-To-School Bonus."