Now that the written exams are complete, please see the following explanation of how they are scored.
The passing score for each NBCE exam is individually determined based on multiple inputs including a committee which consists of a combination of subject-matter experts (chiropractic college professors) and chiropractors representing state licensing boards. The committee carefully considers each question on an exam and provides an assessment. The individual marks for each question are combined to produce a recommended passing score for the entire exam.
Passing scores are periodically reviewed and they are reexamined when there is a significant change in a test plan.
The passing score is converted to a scaled score of 375. The remainder of the exam is scaled above and below 375.
Once a passing score is implemented, it is maintained in subsequent exams through a process called equating. Equating is a procedural and mathematical process that maintains the comparability of scaled scores on an exam from one administration to the next.
The average score on Part I, Part II, and the Physiotherapy exams is 500. The standard deviations are 100. Approximately 68% of the scores range from 400 to 600; about 95% of the scores range from 300 to 700.