American Astronomical Society Education Office
http://www.astro.wisc.edu/~keivan/aas/v4/

American Journal of Physics
http://www.amherst.edu/~ajp/

Association for Astronomy Education
http://solar.physics.montana.edu/aae/

AstroWeb: Astronomy Education Resources
http://cdsweb.u-strasbg.fr/astroweb/education.html

Conceptual Astronomy and Physics Education Research Team http://www.physics.montana.edu/physed/

The Astronomical Society of the Pacific
http://www.aspsky.org/education.html

University of Maryland Site
http://www.physics.umd.edu/rgroups/ripe/perg/

Unversity of Massachusetts Physics Education Research Group
http://umperg.physics.umass.edu/projects/Untitled

University of Nebraska Research & Development in Physics Education
http://physics.unl.edu/research/rpeg/rpeg.html