The passing score for the OCN , AOCN , and CPON 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 , AOCN , and CPON Tests. ONCC and ACT 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 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. 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.