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Methodology

Accessibility Testing Methodology

Testing by DHS Trusted Tester credentialed evaluators for Section 508, WCAG 2.2, VPAT/ACR, and ADA Title II readiness. Every claim mapped to a success criterion. Every finding backed by evidence.

Methodology overview

Rigorous, evidence-based, and procurement-defensible.

Every evaluation is performed by a DHS Trusted Tester credentialed evaluator using the DHS Section 508 Trusted Tester process and mapped to the standards public-sector reviewers actually cite. Engagements are founder-led from scoping through delivery. Automated tooling is used only as a floor — manual expert review, keyboard operability testing, screen-reader checks, and document accessibility review form the deliverable.

Standards mapped

Section 508, WCAG 2.2, VPAT/ACR, ADA Title II readiness.

Section 508

Revised Section 508 (ICT Refresh) for federal agencies and contractors. Every Supports / Partially / Does Not Support claim is mapped to the underlying success criterion and backed by evidence.

WCAG 2.2

WCAG 2.2 Level A and AA — the current standard cited in federal, state, local, and higher-education accessibility policies, and incorporated by reference in ADA Title II.

VPAT / ACR

VPAT 2.5 Rev 508, Rev EU (EN 301 549), and Rev INT (WCAG) preparation, review, and OpenACR YAML twins for procurement-grade machine-readable conformance.

ADA Title II Readiness

DOJ Title II digital accessibility rule readiness for state and local government and higher education — inventory, baseline, and roadmap to the April 2026 / 2027 compliance dates.

Testing inputs

What we test against.

We define scope around the artifacts a reviewer can audit: user flows, page templates, documents, forms, and applications — sampled to be representative of the in-scope ICT.

  • Critical user flows (apply, register, transact, search, contact)
  • Page templates and design-system components
  • Electronic documents (PDF, Word, Excel, PowerPoint)
  • Forms, validation, and error-handling patterns
  • Web, SaaS, and mobile applications
  • Representative samples across in-scope ICT

Testing approach

How we evaluate conformance.

Manual expert review

Code-level inspection of semantics, ARIA, focus order, heading structure, and link purpose by a credentialed evaluator of record.

Automated scan support

axe-core, Lighthouse, and Pa11y across in-scope pages — used as a floor, never as the deliverable.

Keyboard & screen reader

Keyboard-only navigation and screen reader checks with NVDA + Firefox, JAWS + Chrome, and VoiceOver + Safari.

Color contrast & reflow

WCAG color-contrast review, 200% / 400% zoom, reflow, and reduced-motion checks across the responsive range.

Forms & error handling

Label and instruction association, error identification, suggestion, prevention, and recovery patterns evaluated end-to-end.

Document accessibility

PDF/UA, Section 508, and WCAG 2.2 AA review of tagged PDFs, Word, and Excel — including reading order, alt text, and form fields.

Findings model

What every finding includes.

Severity
Critical / Major / Minor — calibrated to user impact and procurement risk, not just count.
WCAG criterion
Each finding is mapped to the specific success criterion (e.g., 1.3.1, 2.4.7, 4.1.2).
User impact
Plain-language description of who is affected and how — assistive-tech users, keyboard users, low-vision, cognitive.
Remediation recommendation
Concrete fix guidance with code patterns, ARIA usage, or content / structural change — not just a citation.
Validation status
Open / Fixed / Verified — tracked through retest, with evidence captured on closure.

Deliverables

What you receive.

  • Issue log mapped to WCAG success criteria with severity and remediation guidance
  • Executive summary for program leadership, COR/COTRs, and Section 508 program offices
  • Remediation roadmap sequenced by severity and user impact
  • VPAT / ACR preparation and review, with OpenACR YAML twin on request
  • Retest results and validation memo on closure

Defensible documentation for the people who get audited too.

If your COR, OIG reviewer, or program office asks how a claim was reached, the answer is in the file — the success criterion, the evidence, and the evaluator of record who signed it.