For many years assessment strategies and practices have emphasized on the one hand the importance of integrating assessment and learning and, secondly, the need to develop technological tools that facilitate this relationship and integration. In this paper, firstly we describe the EvalCOMIX® web service and then we present the opinions of university tutors and students that have used this web service in their courses. We conclude that EvalCOMIX® is actually more than a just a web-based programme for assessment. Through its use, on the one hand, it can encourage student participation in the assessment process, by selecting or defining criteria, building tools and processes used in self-assessment and peer assessment. In addition, students receive valuable and relevant information about their performance and progress, so that improvements can be incorporated both in their learning process and the results they achieve. [For full proceedings, see ED571430.]