Book excerpt: Explore the powerful synergy between your credibility with students and your collective efficacy as a member of a team. When you increase your credibility with students, student motivation rises. And when you partner with other teachers to achieve this, students learn more. This one-stop resource illuminates the connection between teacher credibility and collective efficacy and offers specific actions educators can take to improve both. It includes: Tips for becoming more trustworthy, competent, and responsive in the eyes of students Tools for teams to use to polish their collective effectiveness through better communication and problem-solving Coaching videos that challenge teachers to improve teacher practice and grow professionally