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 --helpExit Codes
- 0: Fully compliant
- 1: Issues found
- 2: Cannot load materials
- 3: Critical accessibility barriers