Test scores are used to assess one's general knowledge of a specific area. Although strategies to improve test performance have been previously identified, the consistency with which one uses these strategies has not been analyzed in such a way that allows assessment of how much consistency affects overall performance. Participants completed one of many exams over a variety of educational subjects. PPT (Potential Performance Theory) (Trafimow & Rice, 2008; 2009) was used to analyze their scores. Results indicated that consistency played a large role in affecting observed performance. Had participants been perfectly consistent, their observed performances would have been significantly higher. Analysis of sample individual data revealed that different individuals need to work specifically on either consistency, content knowledge, or both. (Contains 2 tables and 2 figures.)