Saw the other thread and thought it might be helpful to some to compile a list of possible choices in one place. These are sites we've used or looked at, or I've read about here or elsewhere. There are 1,000's more. Add yours and maybe we'll have a good resource.
www.homeschoolbuyersco-op.com - join to get substantial savings on all sorts of stuff - and btw, they say they are getting cybered back.
www.k12.com www.time4learning.com - fun curriculum which includes online game time (games are not educational - things like pac-man and asteroids)
http://cdis.missouri.edu - grades 3 on
http://www.ucopenaccess.org - high school AP courses
http://epgy.stanford.edu http://www.cty.jhu.eduhttp://www.prufrock.comhttp://www.criticalthinking.com/index.jsphttp://www.rfwp.com - Michael Clay Thompson curriculum - note there is a yahoo group, too:
http://groups.yahoo.com/group/MCTLA/joinwww.brainpop.comhttp://www.singaporemath.comhttp://heymath.comhttp://www.artofproblemsolving.com http://www.thinkwell.com http://www.all-about-spelling.comhttp://www.bravewriter.comhttp://www.writeathome.comhttp://www.hewitthomeschooling.com/book/blight.aspWell, I'm tired of copying, but that's a start.