The story
Founded in 1921, NCSS engages and supports educators in strengthening and advocating social studies. With members in all the 50 states, Washington, D.C., and 69 foreign countries, NCSS serves as an umbrella organization for elementary, secondary, and college teachers of history, geography, economics, political science, sociology, psychology, anthropology, and law-related education. Organized into a network of more than 110 affiliated state, local, and regional councils and associated groups, the NCSS membership represents K–12 classroom teachers, college and university faculty members, curriculum designers and specialists, social studies supervisors, and leaders in the various disciplines that constitute the social studies.
From Wikipedia’s article on National Council for the Social Studies, shared under CC BY-SA 4.0.3