Hoagies is a well recognized provider for gifted education—and this is free!
http://www.hoagiesgifted.org/online_hs.htm
National Association for the Gifted www.nagc.org Florida Association for the Gifted (FLAG)
http://www.flagifted.org/
Council for Exceptional Children Information Center of Disabilities and Gifted Education
http://ericec.org/
Neag Center for Gifted Education and Talent Development
http://www.gifted.uconn.edu/
Working on Gifted Issues Project
http://www.unfwogi.com/
A Nation Deceived
http://www.nationdeceived.org/
Genius Denied
http://www.geniusdenied.com/
Space Coast Future Problem Solving (FPS)
http://www.FLFPSP.org/districts/spacecoast.html
Odyssey of the Mind
http://www.odysseyofthemind.com/
The Association for the Gifted (Council for Exceptional Children)
http://www.cectag.org
Gifted-Children.com: Identification, Encouragement, and Development (GCC)
http://www.gifted-children.com/
Davidson Institute for Talent Development
http://www.ditd.org/
American Association for Gifted Children (AAGC)
www.aagc.org
Association for the Gifted (TAG-Council for Exceptional Children)
www.cec.sped.org
Supporting Emotional Needs of the Gifted (SENG)
www.sengifted.org
National Parent Information Network (NPIN)
www.npin.org
World Council for Gifted and Talented Children
www.WorldGifted.ca
Writing and Math Tutorials: Distance Education for Talented Youth (Johns Hopkins)
www.jhu.edu/~gifted/programs.html