The following references are for the Clinical Judgment portion of the CCRN exam, which previously made up 100% of the CCRN Exam. Effective July, 1999 the Clinical Judgment portion constitutes 80% of the exam, with the remaining 20% of the exam based on Professional Caring and Ethical Practice. At the bottom of this page are references for the Professional Caring and Ethical Practice portion of the exam. Please see elsewhere on this Web site for further discussion of the Synergy Model and the revisions to the examination.