I found this brilliantly fantastic--seeing that I'm a homeschool mom and all. I had to share this delightful news with you.
The Master's College has undergraduate classes that can be completed online. And many states (potentially all) afford you an opportunity to get dual credit for taking college courses while in high school (high school credit AND college credit).
If you are wanting your high schooler to take college level courses to complete high school credit, this would work for you. Or, if your high schooler needs to be at home for a bit longer--post graduation--but still wants to complete college-level courses then this may be something for you to consider. Here's the link to get more information.
Check it out. Pray about it. See if this is the perfect fit for you or your family.