The University of California Information Technology Accessibility Policy requires compliance with the WCAG 2.0 level AA standards for all web-based information.
WebAIM maintains a series of articles on accessibility. They cover most aspects of planning, assessing, and implementing electronic accessibility. These articles are an excellent primer and reference about accessibility.
Link to detailed description of the web accessibility standard
More information on the three levels of conformance (A, AA, and AAA) to meet the needs of different groups and situations
Technical steps for creating accessible websites
Writing and content tips for accessibility
Tools and services for making accessible surveys.
Making media on the web accessible to individuals with disabilities