As per the fine print:
Product selection and quantity may vary between stores. Offer valid in-store only October 1-3, 2011 upon presentation of a valid Teacher I.D. Offer applies to regular priced in-stock books, bargain books, toys and home décor items. Offer not valid in conjunction with any other offer or promotion, including everyday irewards discount and cannot be used to adjust amount paid on previous purchases. Not valid on kiosk or online orders. Does not apply towards teh purchase of electronics & accessories, giftcards, magazines, newspapers, CDs or DVDs, Rosetta Stone interactive learning software, irewards memberships/renewals or Indigo Love of Reading foundation donations or fundraising products. This offer may change or end at anytime without notice.