The NKE is a multiple-choice assessment of knowledge in human resources. Of the 160 questions on the examination, 150 are designated as operational (intended to be scored), and 10 unscored are included for field test purposes. A candidate’s total score is calculated as their number of correct answers.
Candidate responses are extracted from the line test delivery tool, and imported into a scoring and reporting software. Then, a preliminary item analysis study is conducted in which the statistics that describe the quality of each question is used to identify if any questions demonstrate unsatisfactory measurement properties. Such questions are then reviewed one-by-one by experts in human resources, and these experts decide whether or not the questions should be scored. Thus, the number of questions that ultimately are scored may not equal 150. Once these decisions are made, they are recorded in the answer key and an additional item analysis study is conducted to verify that the decisions were recorded correctly.
Using the approved answer key, the answer records are then scored and equated. Equating is a statistical process used to be sure that everyone is held to the same passing standard. This is necessary because there are multiple versions of each exam, and these versions may vary slightly in difficulty. Thus, scores that result from this process account for the number of scored questions answered correctly by each individual as well as the difficulty of the version of the NKE used in the given test administration, such that scores represent the proficiency of each candidate relative to the standards established for the NKE. These scores are then scaled to a distribution that ranges from 200 to 800, with the criterion-referenced passing standard anchored at 500. A scaled score is a score that has been mathematically transformed from one scale to another scale that is used for reporting purposes. This transformation is similar to converting from pounds to kilograms. The weight of the object has not changed, only the units being reported. The scaling is performed by multiplying the raw score for each candidate by the expected standard deviation of the scaled-score distribution and then adding a constant that places the passing standard at 500.
Scanned exam scores are very accurate, however manual re-scores are available for those who believe that there has been an error in the scoring of their exam. Requests for manual re-scores will be accepted for 60 days following the release of exam results. Please allow at least two weeks for processing of your request.
To request a manual re-score for the NKE, print a copy of the request form, complete and send along with payment of $65 CDN, to the address indicated on the form.