Mindfulness-based interventions can improve teachers' capacities for attention and emotion regulation, as well as their prosocial dispositions like compassion and forgiveness. The purpose of this set of research studies (including three case studies and a larger non-randomized treatment-control group quasi-experimental study) was to examine whether or not capacities like these, learned through participation in a mindfulness training (MT) program for teachers, become embodied and show through as changes in teachers' mindful behavior in the classroom-specifically, their ability to be calm, clear-minded and kind-hearted in their speech and behavior with students in the classroom. These studies used first-person, teacher reports and third-person, observer measures to assess potential MT-program-related impacts on changes in teachers' classroom speech and behavior over time. Results from survey and interview data showed change in teachers' perceptions of their mindful classroom behavior. The case studies showed evidence of change in teachers' calm, clear and kind classroom speech and List of Tables……………………………………………………………………………..vi List of Figures……………………………………………………………………………vii