Testing and improving web site accessibility. Making sure a web site is completely accessible to all users, with or without disabilities. Familiarity with international accessibility standards.
Learning/improvement resources: 
Demonstrated by: 

A person Skilled in accessibility should be able to do the following:

  • Identify and test accessibility within Drupal core and contributed projects.
  • Create issues to document and detail accessibility concerns.
  • Review, test, and validate accessibility remediations and fixes.

An Expert in accessibility should additionally be able to do the following:

  • Provide detailed feedback to contributed projects on WCAG compliance at various levels, as well as remediation steps.
Related skills: 
Usability and user interface design

Roles and Tasks that require this skill

Accessibility group member (Contributor role)
Improve the accessibility of Drupal core and contributed modules, themes, and distributions
Duration: ongoing
Test a patch or merge request for accessibility (Contributor task)
Perform accessibility tests for a proposed software fix (patch or merge request)
Duration: 20 minutes

Roles and Tasks that may use this skill

Create a merge request for an issue (Contributor task)
Add or update a "merge request" (software fix) on an issue
Duration: 1 hour
Create a patch for an issue (Contributor task)
Add a "patch" (software fix) to an existing issue
Duration: 1 hour
Drupal core topic maintainer (Contributor role)
Review issues in a given topic in Drupal core
Duration: ongoing
DrupalCamp speaker (Contributor role)
Make a presentation at a DrupalCamp or DrupalCon event
Duration: 1 hour
Manually test a proposed fix for an issue (Contributor task)
Manually test a patch or merge request that has been proposed as the fix for an issue
Duration: 20 minutes
Mentor (Contributor role)
Inspire, enable, and encourage new core contributors. Work on the core tools and process for mentoring
Duration: several hours
Participate in a Usability meeting (Contributor task)
Attend a Usability group meeting. Participate in or lead usability reviews.
Duration: 1 hour
Project contributor (Contributor role)
Contribute your time to Drupal core or a contributed module, theme, or distribution project
Duration: ongoing
Software tester (Contributor role)
Manually test Drupal core or contributed modules, themes, or distributions
Duration: ongoing
Usability group member (Contributor role)
Improve the usability of Drupal core and contributed modules, themes, and distributions
Duration: ongoing