The authors explored the use of the Practice Evaluation Knowledge Scale (PEKS) to assess student perception of acquisition and retention of practice evaluation knowledge from an undergraduate research methods class. The authors sampled 2 semesters of undergraduate social work students enrolled in an introductory research methods course. Thirty-four students completed PEKS prior to the course (T1) and at the conclusion of the course (T2). Finally, 25 students completed PEKS 2 semesters after course completion (T3). Significant differences with small to medium effect sizes were found between T1 and T2 scores and T1 and T3 scores. Findings indicate that the scale may be a useful tool in assessing perception of knowledge acquisition and retention within this population. (Contains 2 tables and 1 figure.)