Bmom, I am not home schooling my children at home, but as a teacher, have known and helped many home-schoolers with their programs. Not as a set-up liason, but to lend advice on advancement and educational issues.
Below is the TN website on home schooling. I notice that there have not been any responses yet to your post, but there will. There are quite a few folks in TN who do choose to provide home education for their children.
In the meantime, you might want to do a TN forum search from the Search option at the top on the page. Type in "Home-schooling in Tennessee". Be sure to specify TN, or you will get posts from every state!
There is also an Education Forum that has had several threads on home-schooling at various times. You can do a search there also. (I would try a "posts" search in TN, rather than "thread".)
You will find that once you start to receive local feedback from folks that there a quite a few who have support groups, enrichment groups, etc. that you can get involved in.
Best of everything to you with your children.
TN Department of Education:K-12