Wikipedia is a widely used resource by university students, but it is not necessarily regarded as being reliable and trustworthy by them, nor is it seen as a context in which to make content contributions. This paper presents a teaching and research project that consisted in having students edit or create Wikipedia articles and testing whether or not this experience changed their perceived value of the platform. We conducted our experience at Universitat Pompeu Fabra (Barcelona, Spain) and University of Niš (Niš, Serbia) with a total number of 240 students. These students edited articles and answered two questionnaires, one before and one after the exercise. We compared the pre- and post-experience answers to the questionnaires with a series of paired samples t-tests, through which our data showed that students did significantly change their perception of reliability and usefulness, and of likeliness of finding false information on Wikipedia. Their appreciation of the task of writing Wikipedia articles, in terms of it being interesting and challenging also increased. They did not significantly change, however, their judgement on the social value of the platform, neither in the university nor in the general context. In addition, the open questions and informal feedback allowed us to gather valuable insights towards the evaluation of the overall experience.