La scala di Likert per la valutazione della didattica

The evaluation of teaching staff by students is often carried out with a questionnaire containing items which ask respondents to indicate their agreement with statements using a five-point Likert scale. A mark scale, the characteristics of the scale, the perceptions of students about the intensity of the options of the scale are presented in this paper. The distributions of the numerical values attributable to the Likert scale were derived from the (empirical) data obtained through the analysis of a survey aimed at gathering the opinions (about those values) of the students attending the first year of the Faculty of Economics in Modena. The analysis showed that values on the scale ranging from zero to ten depended on the following: how the question was asked and which terms defined the five categories; the question itself; the kind of course; the intensity level of the Likert scale.