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