The National Principals Association (NPA) is a professional organization that supports PreK–12 principals and assistant principals through resources, advocacy, learning opportunities, and connection with peers. Its work centers on strengthening school leadership and helping leaders address the practical challenges of their roles. Members can access a Resource Library with curated guidance, insights, and strategies, along with policy issue briefs that connect education legislation and research to school practice. The association also provides professional learning through virtual events, leadership networks, and the National Principals Conference, which brings school leaders together to learn and collaborate across grades and communities.

NPA’s networks offer supportive spaces for principals and assistant principals to exchange experiences and build professional relationships, including communities for women school leaders, LGBTQ+ leaders, and leaders of color. The organization recognizes leadership through programs such as Principal of the Year and Assistant Principal of the Year, and promotes advocacy through campaigns and policy resources. Its student leadership programs support schools in developing student voice, service, leadership, and engagement.