Why are scaled scores used?
AEPA tests are not scored by the percentage of questions answered correctly. Rather, the raw score (the number of questions answered correctly) is converted to a scaled score by placing each administered form of the test on a scale common to all forms of that AEPA test. Examinee performance on a test form is placed on a common scale because each test form may differ from other forms of an AEPA test. While efforts are made to create test forms that have the same overall level of difficulty as the original form of the test (on which the passing standard was set), there are often minor differences in overall difficulty from test form to test form. The total scaled score adjusts for these differences. Each test form is statistically equated back to the original form of the test. Therefore, in order to maintain fairness to all candidates, a candidate who takes a slightly more difficult form of a test may be required to answer one or two fewer questions correctly in order to achieve the scal
