Final answer:
The American School Counselor Association (ASCA) sets the national standards for school counseling programs through the ASCA National Model, widely adopted across U.S. schools.
Step-by-step explanation:
The organization that sets the national standards for school counseling programs is the American School Counselor Association (ASCA). The ASCA provides a model framework known as the ASCA National Model, which outlines competencies that school counselors should possess and guidelines on how to structure effective school counseling programs. This comprehensive framework is widely adopted in the United States and helps ensure that students receive consistent and high-quality support across the nation's schools.