National Science Teachers Association

The National Science Teachers Association (NSTA), founded in 1944 and headquartered in Arlington, Virginia, is the largest organization in the world committed to promoting excellence and innovation in science teaching and learning for all. NSTA's guiding principles are to model excellence; champion science literacy; value scientific excellence; embrace diversity, equity, and respect; and enhance teaching and learning through research. NSTA's current membership of 60,000 includes science teachers, science supervisors, administrators, scientists, business and industry representatives, and others involved in and committed to science education.

http://www.nsta.org