Hi Greg and Donna. I am not the most qualified to reply here, my wife is...but she's not here so I will say what I think she will say. :)
We have 4 children and two are school age 8 and 10. We have always homeschooled them for various reasons. Its hard to find good material but with younger children, especially elementary, you can assemble your own curriculumn easily. We normally get our textbooks from the library when they have a book sale. Ebay can get a little pricey.
But here is the bottom line. Teach your kids to read (using phonics),to write, and do math. If you just concentrated on the 3 R's your kids will be ahead of most every public school child. Most importantly, though, if they can read well, they can learn anything and mostly by themselves.
Sorry...this is really the bottom line. The above bottom line was to keep you interested. :) The Torah says to teach them always in every situation (Deut 6:7). But teach them what? A Greek education? No. Teach them Torah. Why because when you teach them truth their mindset is the same mindset as Elohim. They become smart by association.
We tried this. My wife used to spend hours trying to get them to understand things and they would struggle to get them. Now this was mostly attitude issues. You know, the "I don't want to learn today, I want to go outside instead" thing. It wasn't a mental accuity thing. But we decided to take Elohim at His word and see what happened. Now my wife spends the first hour to hour and a half doing a bible study/prayer session with them teaching them the scriptures.
What was the outcome? My kids spend only a couple of hours in school each day taking in more than they were in several hours before. And add to that, you don't want to get into a theological debate with my 8 year old! He knows the word and his authority.
A college degree won't mean anything in the kingdom. Your knowledge of Torah will. And the kicker is that Torah makes you smart on this side of the kingdom as well. Its the only book I'd recommend.