Though National Board Certified Teachers (NBCTs) in Arizona have been identified as leaders on a national level, they do not have comparable opportunities to lead within their local contexts or engage in leadership and collaboration activities that align with Interstate Teacher Assessment and Support Consortium (InTASC) Standard 10. The purpose of this sequential, mixed-methods study was to explore how the development of a teacher leadership community of practice for NBCTs might influence their perceptions of themselves as leaders. Social constructionism, action research, and communities of practice guided the innovation and a mixed-methods approach was used for data collection and analysis. Data illustrated NBCTs’ dichotomous feelings about leadership on local and national levels. Findings revealed that NBCTs need continued professional learning opportunities, beyond National Board Certification, to resolve feelings of isolation and fully meet all of the leadership and collaboration indicators for InTASC Standard 10. Participating in a teacher leadership community of practice (a) provided a professional learning opportunity for NBCTs, (b) improved NBCTs’ perceptions of teacher leadership and helped them define it as an active process of learning, reflection, and action, and (c) increased NBCTs’ readiness to take action as teacher leaders within their local contexts to evoke positive change.