How is the MPRE scored?

The performance information provided for the MPRE is a scaled score which ranges from 50 (low) to 150 (high). MPRE scaled scores are calculated by NCBE based on a statistical process known as equating that is commonly used on standardized examinations. This statistical process adjusts raw scores on the current examination to account for differences in difficulty as compared with past examinations. Equating makes it possible to compare scaled scores across test administrations because a scaled score will represent the same level of knowledge/performance from one test date to another. Equating helps to ensure that no candidate is unfairly penalized or rewarded for taking a more or less difficult form of the test. Because the adjustment of scores during equating is examination-specific (i.e., based on the level of difficulty of the current examination as compared to previous examinations), it is not possible to determine in advance of the test how many questions a candidate must answer correctly to achieve a specific scaled score.