Our mission is to benefit people with Down syndrome and their families through national leadership in education, research and advocacy.

The National Down Syndrome Society envisions a world in which all people with Down syndrome have the opportunity to realize their life aspirations. NDSS is committed to being the national leader in enhancing the quality of life, and realizing the potential of all people with Down syndrome.

1. We respect the rights, abilities and potential of people with Down syndrome.

2. We believe that people with Down syndrome should have the opportunity to make choices affecting their lives.

3. We respect and support the role of families in meeting the needs of people with Down syndrome.

4. We value the efforts of our affiliates in the support they provide to people with Down syndrome and their families.

5. We value excellence in the quality of education, research and advocacy provided to our constituents.

6. We value diversity in our board, staff, volunteers and membership

7. We value the excellence and commitment of our board, volunteers and staff in their roles supporting the rights and abilities of people with Down syndrome.