What’s the connection between teacher credibility and collective efficacy in schools? Highly credible teachers can’t reach their full potential without engagement in a collective of other teachers. And collective efficacy is difficult to achieve when teachers are not credible with their students. The Teacher Credibility and Collective Efficacy Playbook illuminates the connection between teacher credibility and collective efficacy and offers actions educators can take to improve both. When you increase your credibility with students, student motivation rises. And when you have evidence of your ability to impact student learning, and partner with other teachers to achieve this, your students learn more.