For those of you not lucky enough to have a District Warehouse, hardware stores, or affordable local art store Dick Blick Art Supplies is the next best thing. You can even create a classroom wish list for specific supplies. They offer discounts, special pricing, and even Lesson Plans for educators. My favorite feature is called Art Room Aid, it is a way to fund your classroom!
Visit Blick for Educators: http://www.dickblick.com/educators/