A follow up to Angela's post...Barnes and Noble Discount

Within the last month I went to Barnes and Noble for my educator/teacher discount card.  You just need to bring proof of your employment and then they give you a card for 20% off.  It seems to vary from store to store as to whether or not you can use it for just classroom materials or anything you purchase.  I used it this weekend for a completely un-school related purchase and wasn't questioned by the sales attendant.