Abstract
In Italian universities, the evaluations of teaching activity by students is mandatory and the National Committee for University System Evaluation proposed a questionnaire for class evaluation with items based on the four-point Likert scale relying on a traditional item-by-item analysis. In this paper, we propose a fuzzy inference system for analysing the data collected through this questionnaire for items with a four-point Likert scale. The scores based on the traditional procedure are comparable with the scores emerging from our fuzzy inference system.