The New School holds a dual accreditation by the Southern Association of Independent Schools (SAIS) and the Southern Association of Colleges and Schools (SACS).

SAIS is a voluntary organization of more than 200 independent elementary and secondary schools throughout the South. SAIS addresses issues of importance to non-public schools such as organizational excellence, accreditation, curriculum, professional development, governance, equity, and leadership.

SACS accredits over 13,000 schools and school systems throughout the United States and overseas. Its mission is: "to help schools improve student learning through accreditation."

The New School of Northern Virginia has long been affiliated with the Coalition of Essential School (CES) and the National Center for Independent School Renewal (NCISR).

The mission of CES is: “to create and sustain equitable, intellectually vibrant, personalized schools.”  The ten common principles of the CES offer clear and thoughtful guidelines for The New School and other like-minded schools across the nation. We meet with other Essential Schools to monitor and maintain the educational excellence for which we stand.

NCISR is a growing association of schools seriously committed to the work of renewal and innovation through professional development. The idea for the Center originated in discussions with administrators and teachers of five independent schools who are members of the CES.  The New School is a founding member of the Mid-Atlantic Branch of NCISR, and actively participates in weekend workshops for member schools that are held two or three times per year.