You might also check out abeka. They're not the cheapest, but I can attest that they are good. Can't hurt to take a look at their site.
Does Anyone Know Of A Cheap Good Homeschool Program?
Check to see if connections academy is in your area they are a virtual public school everything is done at home they supply the computer printer and books they do not charge you anything and the teachers are wonderful with calling and returning phone calls to the kids and helping them out when they need it my son started it last year and I love it I pay for nothing but the printer paper he uses and the ink and I even get comped a small amount for having the internet service three times a year go onto the web and search connections academy it really is wonderful and you don't pay for it its free I hope this help you...good luck