PBS Teacher Source - PBS showcases the work of hundreds of diverse producers and local PBS stations, who in turn tap the creative minds of top thinkers from around the world to create education's best content. 

ASCD - The Association for Supervision and Curriculum Development is a unique international, nonprofit, nonpartisan association of professional educators whose jobs cross all grade levels and subject areas. In their diversity, our members share a profound commitment to excellence in education. Founded in 1943, ASCD's mission is to forge covenants in teaching and learning for the success of all learners.

AED - The Academy for Educational Development.  Founded in 1961, AED is an independent, nonprofit organization committed to solving critical social problems in the U.S. and throughout the world through education, social marketing, research, training, policy analysis and innovative program design and management. Major areas of focus include health, education, youth development, and the environment.