R2Q2: rendering and reponses processing for QTIv2 question types

IMS QTI is a popular and important standard for e-learning assessment. The second version of the standard (QTIv2) works alongside other IMS standards, but take-up has been slow, with problematic implementations and no definitive reference software. The R2Q2 project aims to produce a set of loosely coupled web services that will provide definitive reference software for QTIv2. In this paper we describe how we have learnt from previous development efforts in order to produce a first architecture and initial implementation. We also describe the results of our interviews with the wider QTI community to identify what is believed to be important for our planned final reference implementation.