Online courses should work for every student, including those with disabilities. Accessibility is not an extra feature. It decides whether some learners can take the course at all.
The Web Content Accessibility Guidelines, or WCAG, are the main international standard here. Published by the W3C’s Web Accessibility Initiative, they define three conformance levels: A, AA, and AAA, with AA the usual target. The current version is WCAG 2.2, published in October 2023.
Simple design choices cover most needs. Add captions to videos and transcripts to audio. Write meaningful alt text for images so screen readers can describe them. Keep color contrast strong and never use color alone to convey meaning. Make sure everything works with a keyboard as well as a mouse.
Offer materials in more than one format. A student who struggles with dense text may do better with a narrated version, and a student with hearing loss needs captions rather than audio alone. Clear headings and a consistent layout help everyone find their way around.
Assessments need the same care. Timed quizzes can disadvantage some students, so build in extra time where policy allows. Let students show knowledge in different ways, such as written work, presentations, or projects, when the learning goal allows it.
Work with your institution’s disability office rather than guessing at accommodations. Staff who handle disability accommodations for college students can advise on specific cases and keep the course within policy.
Accessibility overlaps with flexibility. Asynchronous education lets students work at their own pace, which helps many learners. Accessible design also supports wellbeing: students who can use the course without friction report less stress, a topic covered in college mental health resources.
Finally, keep improving. Ask students what barriers they hit, review the course each term, and fix what you find. Building study skills resources in accessible formats from the start saves rework later.
