Dataset of the initial validation of Questionnaire for the Self-assessment of University Service-learning Experiences (QaSLu)

There has been a proliferation of service-learning practices in all areas of knowledge in higher education. Although there are multiple instruments to assess various aspects related to service learning, there are only a few with good reliability and validity. This research tries to fill that gap by providing an optimal instrument. For that, 118 teachers from 43 higher education institutions participated in the validation process. Sampling was incidental and based on opportunity. Participants were asked to fill in the QaSLu-45 questionnaire, which consists of 45 items with a 5-point Likert scale and was validated qualitatively through the Delphi method in 2020. To validate the questionnaire psychometrically, four steps were followed. First, an exploratory factor analysis of the main components was performed. Then, robust unweighted least squares factor exploratory analysis was carried out. In the third step, the goodness of fit and the reliability of the questionnaire was calculated, and in the final step, the scales for the new reduced QaSLu-27 were established. These results provide a valid, robust, and reliable instrument, the QaSLu-27, which not only facilitates the evaluation of service-learning experiences for improving the teaching and learning processes but can also be useful for their design.