“WordPress aims to make the WordPress Admin and bundled themes fully WCAG 2.0 AA compliant where possible.
All new and updated code released in WordPress must conform with these guidelines as per the WordPress Accessibility Coding Standards.
While the WordPress project cannot guarantee that all Themes are compliant, the accessibility-ready themes have been checked by the Theme Review Team to ensure that these themes pass their basic accessibility requirements.” – WordPress on Accessibility

The following is a list of sites with applications or plugins that test “accessibility” on a wordpress site.
We have not tested these, but felt listing them would be useful to wordpress site admins.
We highly suggest our admins test, find and use accessible code/themes/plugins with their WPaaS sites.

WordPress Accessibilty Application/Plugin Links

Accessibilty Application/Plugin Links