The Virtual Company educational scenario engages students in a professional setting for working and learning. Students are enabled to develop competencies that are derived from professional practice. This allows us to use assessment strategies that are different from the practice in traditional educational settings. In the Virtual Company educational scenario the competence assessment procedure starts from the moment a student has a job interview. Students in a Virtual Company are considered starting professionals and are expected to perform as such in adopting an active role in the competency assessment procedures. In order to implement the Virtual Company educational scenario assessment strategy in the Cooper project centred collaborative working environment we developed an assessment module that is closely linked to the Virtual Company educational scenario. In this article, we report on the modelling of the assessment process and its integration into the Cooper collaboration environ...