The Dalton School is a member in good standing of the New York State Association of Independent Schools Athletic Association (NYSAISAA) which provides guidelines for all member school athletic activities. Also guided by our School Mission and our values of teamwork, empathy and fair play, Dalton strictly abides by the NYSAISAA Commissioner's Regulation for competing with other member schools.
In addition, we carefully observe the guidelines, rules and regulations as outlined by other league memberships, which include, but are not limited to:
- The Hudson Valley League
- Mid-Peninsula Middle School League (MPMSL)
- Private Schools Athletics Association (PSAA)