National Association of Independent Schools

The National Association of Independent Schools (NAIS) is a U.S.-based membership organization for private, nonprofit, K-12 schools. Founded in 1962, NAIS represents independent schools and associations in the United States, including day, boarding, and day/boarding schools; elementary and secondary schools; boys', girls', and coeducational schools. NAIS has affiliate members internationally as well. NAIS's mission is to be the national voice of independent schools and the center for collective action on their behalf. Membership As of the 2010–11 school year, NAIS represented approximately 1,400 member independent schools and associations in the United States, serving more than 562,000 students and 121,000 teachers, administrators, and other staff. Membership in NAIS is open to independent pre-college schools operated by nonprofit organizations. To become a full member of NAIS, a school must have operated for at least five years and must be accredited by an accrediting organization approved by NAIS. Accreditation criteria Over the course of a 10-year cycle, associations prepare a self-study demonstrating compliance with the Criteria for Effective Independent School Accreditation Practices. The criteria provide common ground for member associations by delineating best practices, policies, and procedures. In addition, associations use the Model Core Standards—a set of "ideal" standards—in assessing their own standards.