While MOOCS have emerged as a new form of open online education around the world,there are still no cross- provider and large-scale data collections that provides reliable information about demographic details of the population of MOOC participants on the one hand, and their
motivation, intentions, social context, lifelong learning profile and impact on study success and career development on the other hand. The MOOCKnowledge project is an initiative to establish a large-scale data-collection about participants of European MOOCs. In this paper we describe the motivation behind the project and discuss the research focus. We explain the structure of the survey instrument, report about the data collection process and provide an outlook on potential future developments of the project.JRC.J.3-Information Societ