User satisfaction and e-learning systems: towards a multi-criteria evaluation methodologyUser satisfaction and e-learning systems: towards a multi-criteria evaluation methodology Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2015-11-032003enE-learning systems permeate the modern informative approaches of education. As their number is growing up, a new demand arises. That demand is about evaluating those systems in order not to separate the “good” ones from the “bad” ones but to comprehend the factors that lead to an effective and useful e-learning system. This paper proposes a multi-criteria model that uses linear programming to measure a satisfaction index and to compute criteria weights. To evaluate the e-learning system, we use a set of fifteen sub-criteria that corresponds to three main criteria. In addition, there is a crest-question that counts the overall satisfaction. In this study, we focused on the multi-criteria methodology, but we also included our thoughts and ambitions on an expanding implementation through an e-learning system.http://creativecommons.org/licenses/by/4.0/Operational Research33249-259 Matsatsinis Nikolaos Ματσατσινης Νικολαος Delias Pavlos, 1980-… Grigoroudis Evangelos Γρηγορουδης Ευαγγελος Springer Verlag E-learning systems