ASCD is a membership-based organization with more than 125,000 members from more than 128 countries, including superintendents, principals, teachers, professors of education, and other educators. The ASCD Community also includes 52 affiliate organizations, self-organized Connected Communities, and ASCD Student Chapters. While ASCD was initially founded with a focus on curriculum and supervision, the association now provides its members with professional development, educational leadership, and capacity building. ASCD is a global community advancing student achievement by supporting the whole child, and seeks to develop programs, products, and services essential to the way educators learn, teach, and lead.