Johnstone, C. J., Thompson, S. J., Miller, N. A., & Thurlow, M. L. (2008). Universal design and multi-method approaches to item review. Educational Measurement: Issues and Practice, 27(1), 25-36.
The NCAC was estabished with the support of the US Dept of Ed's Office of Special Ed Programs to improve access, participation and progress within the general curriculum for students with disabilities through Universal Design for LEarning, advanced teaching practices, ed policy and consensus building. The NCAC site offers a wealth of resources including case stories, literature reviews, and examples of best classroom practices.