Website Accessibility

As reported by Provost Martin Schmidt in February 2020, MIT settled a lawsuit brought by the National Association of the Deaf (NAD) and several deaf and hard-of-hearing individuals alleging that MIT was violating two federal laws by failing to accurately caption all of the audio and video content posted publicly online by anyone associated with MIT. As part of the settlement, MIT has committed to provide captioning for the following content:

  • Content created or developed by faculty or staff as part of their MIT work that is posted on MIT’s public webpages (within domain) or public third-party platforms (e.g. YouTube, Vimeo, social media, etc.)
  • Content created or developed by a Sponsored Student Group as part of the group’s organizational mission that is posted to MIT’s public webpages or on public third-party platforms.
  • Events that are live-streamed publicly by Institute Events.

This affects content created by the Math Department, as well as related work by faculty, staff, and students/student groups.

The settlement requires that we take specific steps as summarized below. Please share this information with any individuals who help maintain your website, or YouTube, Vimeo, social media channels, etc. If your content is NOT on an site, we ask you to consider complying anyway, in the spirit of accessibility for all.

Each site owner—along with their supervising department, lab, center, or business unit—is responsible for ensuring that covered content is captioned.


  • All websites must include the word “Accessibility” on the site so that it appears on every page, and that word should link to This must be done by October 12, 2020. See the bottom of our Math Dept. page for an idea of how this should look.
  • Publicly accessible video content on sites must be properly captioned. Podcasts must come with a transcript.
    • New Content: Content posted 60 or more days following the effective date (effective date is July 21, 2020) must be captioned upon posting.
    • Existing Content:
      • Content posted on or after January 1, 2019, but before September 19, 2020: Must be captioned (or removed from public view) as soon as practicable, but no later than one year from the effective date. In addition, individual videos and audio files must be captioned within seven business days of a request by an individual member of the public.
      • Content posted prior to January 1, 2019: Must be captioned (or removed from public view) within seven business days of a request by an individual member of the public.
  • Recordings of Live-Streamed Events: Must be captioned as soon as practicable, but no later than seven business days after posting.
  • If you cannot make these changes before the deadline, you may choose to take down or put behind a paywall/password any audio/video. However, we highly encourage captioning and keeping these valuable resources public. Research has shown that captioning increases absorption/retention rates for everyone, not just the hearing-impaired.


Learn More

To learn more about how to make your site more accessible, contact: