For each of the three Parts, a total raw score is calculated and then converted to a scaled score on a 100-900 scale. A score of 100 represents the lowest score possible, while 900 represents the highest score possible. A score of 300 represents the overall pass-fail cutoff score.
Sections and special examinations are reported on a 0-99 scale. On this scale, zero presents the lowest score possible, 99 represents the highest score possible, and 75 represents the pass-fail cutoff score.
Section scaled scores cannot be added to produce the overall Part scaled score. This is because sections have a different number of items and overall point value, and a simple sum of these scaled scores would skew the outcome.
The official score report consists of scaled scores and pass-fail decisions based on overall Part performance. Candidates also receive a supplementary diagnostic performance report that contains their raw scores for each section, as well as subscores within sections. This supplemental report is useful in helping candidates identify areas of relative strength and weakness, as well as in understanding how their performance on each section contributed to their overall Part score.
A detailed explanation of scaled scores, including their rationale, derivation, and interpretation is available here.
