Context: There is a lack of current evidence to help athletic training programs identify students poised for first-time Board of Certification (BOC) exam success as a means to ensure compliance with contemporary accreditation standards. Various academic variables have been previously identified as predictors of first-time success; however, these investigations reflect prior versions of the credentialing examination based on what are now obsolete editions of the professional practice analysis. Objective: To determine the accuracy of undergraduate athletic training student performance factors as indicators of successfully passing the current version of the BOC exam on a first attempt. Design: Casual-comparative (ex-post facto) quasi-experimental. Setting: An accredited undergraduate athletic training program. Patients or Other Participants: A recent sample of athletic training program graduates (n = 43). Intervention(s): Archived data were collected from student academic records and analyzed. Main Outcome Measure(s): Receiver operating characteristic curve analysis computed the area under the curve (AUC), which was used to determine accuracy of variables. Optimal thresholds for passing the BOC exam on a first attempt were computed for each variable by the index of union method. Results: The AUC and associated thresholds for factors were as follows: cumulative grade point average (GPA) upon entry to the major (AUC = 0.67, threshold = 3.20); preprofessional-phase course GPA (AUC = 0.81, threshold = 3.48); averaged admission interview score (AUC = 0.49, threshold = 8.46); averaged preceptor evaluation of applicant score (AUC = 0.53, threshold = 93.88%); unique composite score (AUC = 0.80, threshold = 7.34); cumulative GPA upon graduation (AUC = 0.68, threshold = 3.19); combined math and reading SAT score (AUC = 0.90, threshold = 960); clinical education hours (AUC = 0.61, threshold = 1131.08). ConclusionsL Preprofessional-phase course GPA provided the greatest accuracy of the secondary admissions criteria; however, the combined math and reading SAT score provided the greatest accuracy of all examined variables. Furthermore, the unique composite score may represent an accurate, all-inclusive indicator of success. Program administrators and athletic training educators may use these outcomes to shape their related programmatic operations.