The U.S. Dept. of Education sent FAQs on accessible educational technology to all colleges, universities, and K-12 school districts
To read the Dear Colleague Letter to elementary and secondary schools, see http://www2.ed.gov/about/offices/list/ocr/letters/colleague-201105-ese.html.
To read the Dear Colleague Letter to institutions of higher education, see http://www2.ed.gov/about/offices/list/ocr/letters/colleague-201105-pse.html.
The FAQ is available at http://www2.ed.gov/about/offices/list/ocr/docs/dcl-ebook-faq-201105.html.