Perhaps you might let them research Art and Activities magazine (619 297
8032) Subscribtion number) designed for K - 12 teachers which covers ceramic
American Crafts? (Don't know if they are still around) 212 696 0710, or
American Art Review 800 221- 3148 or Art News 212 398 1690. At least they can
search the web site and search for articles on ceramics.
Hope this helps