Investigation of satisfaction with student affairs according to classical test and item response theories

The aim of the study is to examine the item and test parameters of the scale scores obtained with the Satisfaction with Student Affairs Scale developed according to the Classical Test Theory and the Progressive Response Model of the Item Response Theory. The study is a basic research in which data was collected from 1359 university students in Gaziantep with the purposive sampling method. As a result, in the study, it was observed that the correlation between the parameter estimations and item discrimination according to both theories was high in the positive direction, and the correlation between the means of the items was high in the negative direction. In addition, Cronbach's alpha coefficient was calculated as .92 according to CTT, and marginal reliability coefficient was calculated as .92 according to IRT, which is one of the reliability estimation methods. Keywords: scale development, test-retest, classical test theory, item response theory, satisfaction, student affairs,