What Percentage to Pass the RD Exam? Understanding the Scaled Score
                                
                                
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                                    5 min read                                
                            
                                The RD exam is not graded on a percentage, but on a scaled score system of 1 to 50. This means you do not need to answer a specific percentage of questions correctly to pass. Instead, you must achieve a minimum scaled score of 25, a complex calculation determined by the Computer Adaptive Testing (CAT) format.