In most cases of discrimination on the basis of disability in a postsecondary institution, and certainly in web accessibility cases, Section 504 of the Rehabilitation Act of 1973 (§504) and the Americans with Disabilities Act (ADA) will be appropriate avenues for bringing a complaint. The Office for Civil Rights (OCR)  has responsibility for enforcing both these federal laws in public educational settings and would hear a complaint regarding inaccessible websites.
Note: This article is an excerpt from the larger AccessIT document Web Accessibility and Individuals with Disabilities in Postsecondary Education: The Legal Issues .
-  The Office for Civil Rights (OCR)
-  Web Accessibility and Individuals with Disabilities in Postsecondary Education: The Legal Issues