Council for Economic Education: http://councilforeconed.org/
At the national level, the Council for Economic Education (CEE) based in New York City, has been promoting economic and financial education for more than 60 years. The CEE conducts teacher training and develops curricula materials, and nationally-normed assessment tools such as the Test of Economic Literacy. They also work with their affiliates at the state and local level to provide these services and to provide some funding.
The Council’s free curriculum and resource site is EconEdLink: http://www.econedlink.org/
National Association of Economic Educators: https://www.naee.net/
Also at the national level, the National Association of Economic Educators (NAEE) exits to support economic educators in their quest to promote economic and financial literacy. Since 1980, NAEE has provided economic educators with the opportunity for networking, professional development, research, and recognition.
The Federal Reserve System: https://www.federalreserveeducation.org/
Beginning in the late 1970s, after growing concern that the U.S. public was uninformed about its role, the Federal Reserve began its economic and financial education initiatives. The Federal Reserve works at the national level through its regional Reserve Banks to train teachers, develop curriculum materials, conduct research, and partner with state and local organizations to promote economic and financial literacy for its constituents.
All Federal Reserve Districts have economic education programs, but in my opinion, these are the best:
St. Louis Fed: https://www.stlouisfed.org/education
Dallas Fed: https://www.dallasfed.org/educate
Philly Fed: https://www.philadelphiafed.org/education
Atlanta Fed: https://www.frbatlanta.org/education.aspx