Criteria design to reduce variability in the grading of mathematics exams in tests of university entrance

This article presents the process of construction of criteria to qualify math tests in order to reduce the variability in the grades given by different correctors. From the identification of undesirable-phenomena in correction process, we provide theoretical guidelines to generate qualification criteria that are empirically tested and refined in two consecutive studies. The results of the study show that Rating Criteria by Categorization of proposed tasks effectively decrease the variability in the scores in math tests.