Accessibility Validation & UDL Compliance

Ensure all curriculum materials meet accessibility standards and implement Universal Design for Learning principles for all learners.

When to Use

• Validate WCAG 2.1 compliance

• Check UDL implementation

• Test screen reader compatibility

• Verify keyboard navigation

• Ensure accessible formats

Required Inputs

• Materials: Digital content, documents, multimedia

• Standards: WCAG 2.1 Level (A, AA, AAA)

• Platform: Web, PDF, LMS, etc.

Workflow

1. WCAG 2.1 Compliance Check

Perceivable: ✅ Text alternatives for non-text content ✅ Captions and transcripts for multimedia ✅ Content can be presented in different ways ✅ Sufficient color contrast (4.5:1 minimum) ✅ Text can be resized to 200%

Operable: ✅ All functionality available via keyboard ✅ Enough time to read and interact ✅ No content that causes seizures (flashing) ✅ Navigation is clear and consistent ✅ Input purposes identified

Understandable: ✅ Text is readable and predictable ✅ Pages appear and operate predictably ✅ Input assistance for errors ✅ Labels and instructions provided

Robust: ✅ Compatible with assistive technologies ✅ Proper markup and semantics ✅ Name, role, value for all components

2. UDL Principles Assessment

Multiple Means of Representation:

• ✅ Visual AND textual information

• ✅ Audio descriptions available

• ✅ Content in multiple formats

• ✅ Key vocabulary defined

• ✅ Background knowledge activated

Multiple Means of Engagement:

• ✅ Student choice opportunities

• ✅ Relevance and authenticity

• ✅ Appropriate challenge level

• ✅ Collaboration options

• ✅ Self-reflection prompts

Multiple Means of Expression:

• ✅ Multiple assessment formats

• ✅ Varied response options

• ✅ Scaffolds for practice

• ✅ Tools and supports available

• ✅ Progress monitoring

3. Generate Accessibility Report

Accessibility Review: [TOPIC]

Review Date: [Date] Standards: WCAG 2.1 Level AA, UDL Materials: [List]

Compliance Status

WCAG 2.1: [Pass/Fail] - [X/Y criteria met] UDL Principles: [Excellent/Good/Fair/Poor] Overall: [Ready/Needs Revision]

WCAG Issues Found

Critical (Level A) - Must Fix

1. [Location]: Missing alt text for diagram
   • Impact: Screen reader users cannot access content
   • Fix: Add descriptive alt text: "[description]"

Important (Level AA) - Should Fix

1. [Location]: Color contrast 3.2:1 (needs 4.5:1)
   • Impact: Low vision users struggle to read
   • Fix: Darken text or lighten background

Enhancement (Level AAA) - Nice to Have

1. [Location]: No sign language interpretation
   • Impact: Deaf users who prefer sign language
   • Fix: Consider adding sign language video

Document Accessibility

PDF Review:

• ❌ Headings not tagged
• ❌ Reading order incorrect
• ✅ Searchable text
• ❌ Form fields unlabeled

Fixes Needed:

1. Tag all headings with proper levels
2. Fix reading order in Acrobat
3. Add labels to form fields

Multimedia Accessibility

Videos:

• ❌ No captions
• ❌ No transcript
• ❌ No audio description

Fixes: Add captions, transcripts, audio descriptions

UDL Implementation

Representation (Why)

✅ Strengths:

• Multiple formats provided (text, video, diagrams)
• Vocabulary defined ⚠️ Gaps:
• No audio version of readings
• Limited visual alternatives

Engagement (How)

⚠️ Strengths:

• Some choice in topics ✅ Gaps:
• Limited collaboration options
• No self-regulation scaffolds

Expression (What)

⚠️ Strengths:

• Two assessment format options ❌ Gaps:
• No assistive technology support
• Limited scaffolding tools

Keyboard Navigation

• ✅ All buttons keyboard accessible
• ❌ Skip navigation link missing
• ❌ Focus indicators insufficient

Screen Reader Testing

• ⚠️ Mostly compatible
• ❌ Some tables not properly structured
• ❌ Links not descriptive ("click here")

Recommendations

Priority 1 (Legal Compliance)

1. Add alt text to all images
2. Provide captions for videos
3. Fix color contrast issues
4. Tag PDF headings

Priority 2 (UDL Implementation)

1. Offer audio versions of text
2. Add student choice opportunities
3. Provide multiple expression formats
4. Include collaboration options

Priority 3 (Enhancement)

1. Add audio descriptions
2. Provide sign language
3. Enhance keyboard navigation

Artifact Metadata:

• WCAG Compliance: [Level]
• UDL Rating: [Score]
• Critical Issues: [Count]
• Ready: [Yes/No]

4. CLI Interface

Full accessibility review

/curriculum.review-accessibility --materials "curriculum-artifacts/" --standard "WCAG2.1-AA"

PDF-specific

/curriculum.review-accessibility --pdf "student-handout.pdf"

UDL focus

/curriculum.review-accessibility --focus "udl" --lessons "lessons/*.md"

Help

/curriculum.review-accessibility --help

Exit Codes

• 0: Fully compliant

• 1: Issues found

• 2: Cannot load materials

• 3: Critical accessibility barriers