The Windsor School is registered with and holds an Absolute Charter from The University of the State of New York Education Department.

The Windsor School is an Associate Member of the New York Association of Independent Schools (NYSAIS).

The Windsor School is a member of the Parents League of New York.

The Windsor School was recently re-accredited by the Middle-States Association of Colleges and Secondary Schools. Our current accreditation covers the period May 1, 2019 to May 1, 2026. We have been accredited by Middle States since 1976. Middle States is a nationally and internationally recognized organization (www.msa-cess.org).

The Windsor School met and exceeded all twelve MSA Standards: Mission, Governance and Leadership, School Improvement Planning, Finances, Facilities, School Organization and Staff, Health and Safety, Educational Program, Assessment and Evidence of Student Learning, Student Services, Student Life and Activities and Information Services.

The Windsor School is a member of the following organizations:

•  College Entrance Examination Board
   
•  New York State Association of Independent School (NYSAIS)
   
•  Parents League of New York
   
•  Official SAT Testing Center