The cognitive skills required for successful knowledge retention may be influenced by meditation training. The current studies examined the effects of meditation on the knowledge retention of students. In three experimental studies, participants from three introductory psychology courses randomly received either brief meditation training or rest, listened to a class lecture, then took a post-lecture quiz that assessed students’ knowledge of the lecture material. The results indicated that meditation improved students’ retention of the information conveyed during the lecture in each of the three experiments. Mood, relaxation, and class interest were not affected by the meditation training. Limitations and implications are discussed.