In this policy report from New America, the authors analyzed the national landscape of educator micro-credentials (MCs) to determine how to best harness their potential to more successfully attract, develop, and retain great teachers. MCs were found to be a promising alternative to more traditional, compliance-focused teacher professional development, as well as an effective vehicle for defining and determining eligibility for some teacher roles. The authors summarize early best practices for ensuring quality MC offerings as well as lessons learned about the necessary conditions for teachers to succeed with MCs. As an added resource, New America has developed a companion Model State Policy Guide with recommendations for policymakers looking to integrate MCs into their educator professional development, license renewal, and advancement systems.