Asynchronous on-line discussion boards (AODBs) have become a standard pedagogical tool, and the use of learning outcomes has become normalised in much of higher education, yet little is known about using AODBs to assess learning outcomes. Hence, this article aims to assess the degree to which students demonstrate learning outcomes attainment through participation in an AODB. The research method implemented is built around a particular AODB instrument designed to teach and assess cross-disciplinary learning outcomes. Using a sample group of 30 computing students studying at a public university in the United Arab Emirates, this article demonstrates that a well-designed and structured AODB can be used to teach and assess important cross-disciplinary learning outcomes, and that discussions can be assessed in an efficient manner. By examining both student group and learning outcome scores, results indicate that students showed improvement in learning outcomes attainment across a semester. Given the recent growth in on-line learning, this study supports the need for more research into the use of AODBs as a method to teach and assess learning outcomes.