The current study design is a quasi-experimental pretest post-study design with a control group. Three schools with a total of four preschool classrooms will participate in this study. Overall, the present research study aims to add to the knowledge base of the benefits of mindfulness and yoga in schools for young children. This will include investigating the effect of mindfulness on children's attention, problem-solving, memory, emotional awareness, and impulsivity. For seven weeks, the intervention group will receive the Calm \& Alert mindfulness intervention alongside the rest of their class involving one session per week of about 30 minutes of yoga and mindfulness. The control group will conduct business as usual and receive the yoga and mindfulness intervention after the study concludes. The intervention will be provided by the principal investigator who is a certified mindfulness-informed professional and registered yoga teacher - 200 hours. It is hypothesized that implementing a 30-minute, once-a-week mindfulness program over seven weeks in preschool classrooms will increase emotional regulation, decrease negative behavioral incidents, and increase prosocial behaviors during the school day.