I always knew that my husband and I would homeschool all the way through high school.  My confidence came from two factors: 

1. My husband.  He is smarter than I am; he is often nearby since he works at home; and he is a scientist so he can automatically answer science and math questions that I would have had to research or guide my children in researching themselves 
2. Teacher editions!!!  If I can understand it, I can teach it.

Despite my confidence that high school would happen at home, I began to get nervous.  Sam is now finsihing the 7th grade.  I feel like I have one year to make sure he is prepared for high school.

I have purchased Konos History of the World, year one.  It looks really good--as good as I thought it would.  It would be easy to get excited over it and start it sooner than later.  Although it would be a challenge for him, I think Sam will be capable of doing it in 8th grade.  But I will wait until he is in the 9th grade because I want this unit study course to go on his high school transcript.

I am reading Homeschooling High School  by Jeanne Gowen Davis.  It really seems to be a gem.  When I first received it, I skimmed through it.  I found lovely little tidbits; like getting a Bible in the foreign language your child is learning so they can read it and his English one side by side to increase proficiency.  That is something that never would have occurred to me.  Now I am reading it thoroughly and taking notes as I go.