To test the applicability of item response theory (IRT) to the Korean Nurses' Licensing Examination (KNLE). item analysis was performed after testing the unidimensionality and goodness-of-fit. The results were compared with those based on classical test theory. The results of the 330-item KNLE administered to 12. https://www.theplayfulcollectivees.shop/product-category/sippy-cups/