The document discusses a design-based research project that evaluated the use of peer assessment to promote quality in a blended learning context. The project was implemented over three years in a PhD module, with different online tools used each year (wiki, social networking site, content management system). Analysis found that peer assessment improved over the years, decreasing fears and increasing transparency. Students' perceptions of e-assessment also increased in positivity over time. While peer assessment contributed to self-reflection and a real assessment experience, the quality of feedback could still be improved with more training.