Results showed that more items were selectedfrom the 60-item Basic Education Mathematics Examination for the various sample sizes when itemresponse theory-based item statistics estimates were used than when classical test theory-based itemstatistics estimates were used, it was also found that the item discrimination indices of classical test theoryand item response theory were comparable for different sample sizes while the item difficulty indices ofclassical test theory and item response theory were not comparable only on the very small sample of 200.