Who does the lifting
WCAG 2.1 Level AA has fifty success criteria. Twenty-three are about how the LMS itself behaves under a keyboard, a screen reader or a zoomed screen; those belong to the vendor, not to your syllabus. The other twenty-seven live in course content, and they sort by what they take from you.
21
Repaired for youGlass reads, rebuilds and writes; you get a report and a backup of everything it touched.
4
A ruling from youMinutes, not hours: a name spelled right, a link kept or replaced, a switch turned on.
2
Only you can supply itThe original deck, the Word file, the publisher's edition, or the decision to retire what cannot be repaired.
23
The vendor's, not yoursHow the LMS itself behaves. Their conformance report, not your course.
Repaired for you
Most of the standard is structure, and structure is what Glass rebuilds: headings, lists, tables, reading order, titles, link text that says where the link goes, the language of a document, text where a scan had only a picture of text, and a drafted description for every image. It does this on pages and on the files behind them, puts the repaired file back under the original link, and keeps the original so it can be put back.
A ruling from you
Captions. Requested and corrected for you. You supply the words a machine cannot know, names and drug names, once, and approve the corrected set.
Live captions. Turn them on in the meeting settings. One switch, every session.
Timed quizzes. Extra time and extra attempts are per-student settings only you can set.
Dead links. Each one comes with what the checker and the web archive found: keep, relink, use the archived copy, or remove.
Pages the machine could not settle. A magazine spread or a rating grid comes back as boxes you can retype, reorder or join. A page takes a few minutes.
Course-specific images. A diagram whose meaning is what you teach: approve or rewrite the drafted description.
Only you can supply it
Audio description. Where the slides and the transcript together say what a video shows, they are the alternative. Where the video shows something the words never say, someone who knows must say it.
The originals. A slide deck exported fresh is tagged, titled and structured in one step; a PDF of a deck is a picture of it. The same is true of a Word handout, and a textbook chapter from the publisher's own edition beats any rebuild of a scan.
The decision to retire. A licensed compilation, a stale schedule, a duplicate: some files should not be repaired, and only you can say which.
The two hard problems, measured
87 to 90%
Automatic captionsWord accuracy of the LMS video platform's captions, measured on well-recorded lectures against professional transcripts. One word in ten wrong; in a pharmacology lecture the wrong word is the wrong drug.
99%+
The Glass caption pipelineThe same lectures, the same measure. The accepted benchmark for equivalent access is 99%.
Less
Structure after the checker's "alternative formats"What the LMS checker's built-in conversion produced on our documents. And the memo says a separate copy is no longer an acceptable fix.
95%+
Navigable headings presentIn Glass's repaired documents, measured against pages a person ruled. Every file gets a real title.
Links, the failure students actually meet
The checkers report a link whose text says nothing, "click here", "this link", a bare address, and stop there. They do not rewrite it, and they do not check whether the link still answers. A course built five years ago is full of links to pages that moved and files that were taken down, and it scores clean. Glass rewrites the text, checks every link, traces the dead ones through the web archive, brings each to you as a one-line ruling, and replaces fragile links with stable or archived ones so they do not break again. Then it checks again each term, because links die again.
What it costs you
Minutes of rulings, brought as questions with the evidence attached. The originals you already have. Nothing else: no retraining, no new tool to learn, no separate copies to maintain. And nothing changes in your course without your yes.
See what that looked like on two live courses
Criteria are WCAG 2.1 levels A and AA, fifty in all. Percentages come from two pilot courses at a California community college, Fall 2026.