Educational Testing Service (ETS) and Touch Graphics worked together to produce ACED (Adaptive Content for Evidence-based Diagnosis), an e-learning prototype system under funding from NSF. The three-year project focuses on ways to improve mathematics understanding and performance for middle school students, especially those with visual disabilities. The ACED system is a web-based diagnostic system that uses evidence-centered design for task development and an adaptive algorithm for task selection.

Touch Graphics developed a diagnostic front-end that uses student-reported preferences to establish which of three delivery methods are most suitable to their visual function: mainstream (normally-sighted) version; screen-magnified, color adjusted and audio enhanced (low vision) version; or audio-tactile (blind) version. A series of user tests was undertaken to study the effectiveness of this approach and its potential value in actual assessments.