This product is not recommended for use on a chalk board because it may not fully be removed from the surface. There are chalk ink markers for use on chalk boards, however; currently Staples does not carry them. Please call in to customer support at 1-800-333-3330 for assistance. We have a specialty team that may be able to provide you with chalk ink markers.
Answered on 5/3/2012 by Cindy R from Staples