In this study, we investigated the effects of mindfulness training with 23 pre-service teachers. Subjects were assigned to either a six-week mindfulness training program or a control condition. Postintervention, mindfulness participants reported greater emotional clarity and improved regulation of negative emotions. In particular, the mindfulness group was shielded from an increase in negative emotions compared to the control group. In addition, within-group differences suggested that mindfulness training helps student-teachers control impulsive behavior and respond more flexibly to stressful emotions. These findings add to a growing body of research on the benefits of mindfulness. Pre-service teachers, it seems, gain the most benefit in the realm of emotional regulation.