Skip to Content


Webpage Accessibility

All National Center for Case Study Teaching in Science webpages pass Web Content Accessibility Guidelines (WCAG) 2.0, AA standards.

Areas of accessibility we focus on:

  • Correct page heading structure (H1–H6)
  • Alternative text for images
  • Text labels for form elements
  • Skip to Content link
  • Language attribute for HTML pages
  • Color contrast ratio of least 4.5:1 for normal text and 3:1 for large text.

PDF Case Accessibility

Currently all 870+ cases are accessible. These include:

  • Machine-readable (OCR)
  • Document title
  • Correct heading structure
  • Alternative text for images
  • Language definition
  • Tagging

PDF Answer Key & Teaching Notes Accessibility

Answer keys and teaching notes, access to which is restricted to teachers, are compliant from August 2019 on. Older ones are converted upon request.