I have home-schooled our children for 10 years now. I even home-schooled our oldest son all the way to college. When you home-school you never know what the day will bring. There are so many things going on in a life the day could change in an instant.
And, boy do you study many, many things. Through the years my kids and I have studied: Ichthyology, Theology, Economics, all the maths, Nato, English for 10 years now, American Literature, World Literature and the list just goes on and on and on.