This study examines the relationship between certification examination test results and Emergency Medical Technician (EMT) career success. The sample was drawn from the Longitudinal Emergency Medical Technician Attributes and Demographics Study (LEADS). LEADS participants were matched with National Registry of Emergency Medical Technician (NREMT) certification testing data: (1) exam scores for each attempt until passing the exam, and (2) total number of attempts to pass the exam. Career success was measured both objectively and subjectively. (Contains 6 tables.)