I'm a big fan of JCPenney stores! I think they have the most amazing clearance (One time I got 10 full 2-piece Carter's outfits for $1.97 each!), and there are almost always coupons to go along with the deals.
JCPenney online also has excellent deals; plus, they put out coupon codes to make your savings even better! Sign up for JCPenney email updates and you'll get coupons to use both online and in stores.
Back to School is a great time to shop at JCPenney because they always have excellent deals for kids.