On average, a U.S. teacher impacts about 3,000 students while in the classroom. Yet teaching is one of the most stressful occupations, and teachers leave the field at higher rates than many other professions. With a current estimated 3.8 million teachers in the U.S., the benefits of supporting teacher well-being are clear. In this brief, Dr. Leigh McLean highlights challenges teacher's face and practical steps for policymakers, education leaders, and researchers to address teacher well-being.