Accessible QTI presentation for web-based e-learning

Various guidelines for web accessibility have been issued to direct web developers to create web pages that deliver content to all. Although these guidelines cover most websites, there are some specific types of web pages that call for an extension of such guidelines. This research is dedicated to the improvement of accessibility of e-learning webs, particularly the examination portion. We chose IMS' Question and Test Interoperability specification (QTI) as a baseline framework, and extended it using Web Content Accessibility Guidelines (WCAG) to ensure that we could generate questions for exams that are accessible by all. Specifically, we proposed a method to interpret question structure from QTI specification using WCAG to help in presenting the interpreted questions in an accessible format. Finally, we developed a prototype interpreting tool to check whether the accessibility of the interpreted question is compatible with NVDA screen reader software. The performance of the tool at this stage is promising.