ONCC reserves the right to cancel the scores of any candidate who violates the Professional Examination Rules, or to cancel scores resulting from any testing irregularity.

Scaled Scores
ONCC test scores are reported as scaled scores. A scaled score is a raw test score (the number of questions answered correctly) that has been transformed into other measurement units. The process is similar to transforming your height in inches (your raw score) to centimeters (scaled score). A formula is applied to the raw score to transform it into the scaled score. Please note that a scaled score is neither the number of questions answered correctly nor the percentage of questions answered correctly.

Passing Scores
The passing scores for the ONCC tests were established via a systematic procedure (a Passing Score Study) that employed the judgment of groups of oncology nursing professionals representing various geographical areas, practice settings, roles, and subspecialties. The passing score for the OCN^®, CPON^®, AOCNP®, and AOCNS^® Tests has been set at a scaled score of 55. Because of ONCC's commitment to quality and test security, there are multiple forms of the OCN^®, CPON^®, AOCNP^®, and AOCNS^® Tests.

ONCC and Pearson VUE develop the various forms of each test from the test blueprints, however, the level of difficulty of the forms may vary slightly because different questions appear on different forms. Because it would be unfair to require a candidate taking a slightly more difficult form of the test to answer as many questions correctly as a candidate taking an easier form, the statistical procedure known as equating is used to correct for differences in test difficulty. This method maintains the passing score at a scaled score of 55, even though the passing raw score may vary from test form to test form. Equating is dependent upon a sufficient number of test candidates. If fewer candidates register than are required for accurate equating, another passing score study is conducted.

Score Reports
Candidates will receive an official score report at the testing center, on screen and in print. Candidates who achieve a scaled score of 55 or above will receive score reports indicating PASS only. No numeric scores will be reported for passing candidates. Candidates who fail will receive reports that contain the actual scaled scores achieved (54 or below). All score reports also list the major subject areas of the test and the competency level the candidate has achieved on each. These levels may help failing candidates identify areas in which further study may be needed before retaking the test. The levels used are as follows:

• Level 1 The score obtained is well below competence level.
• Level 2 The score obtained is below competence level.
• Level 3 The score obtained is at competence level.
• Level 4 The score obtained is above competence level.

Certificates and Wallet Cards
ONCC will provide a personalized certificate and wallet card for each candidate who passes the test or meets the ONC-PRO requirements approximately 8 weeks after scores are reported. There is a $10 charge for a duplicate or replacement certificate and wallet card.