If you are teaching a large group of students, I do not argue that you need to know your subject. But I am here as proof that that is not the case in homeschooling. My kid scored in the 95 percentile in English mechanics, 91% overall, including rhetoric, and I think 89% overall in Math. He should have scored higher in math, but he made some uncharacteristic mistakes on a couple of geometry questions. I would not have scored as well as he did, but I've been the only teacher he has ever had. It's the curriculum and the effort. Yes I am the guide, and I do have to be smart enough to look things up from time to time, but heck, I'm teaching him calculus next year and I've never taken the class myself. It doesn't scare me a bit. I've got great curriculum. I know how to grade it.
Grading essays is the hardest thing, but even that is easily doable when you only have one student -- or a very few. If someone is really horrible at it, they just get help. You can even purchase that sort of thing online.
Schooling a kid through the 12th grade is not nearly as difficult as the cash seekers try to make it out to be.
I would like to ask for some input per homeschooling.
I homeschool myself, and I am torn over which math curriculum to use next for Algebra. I have been using Saxon 76 with my daughter who is in 5th grade, and got their Pre-Algebra, but I have seen recomemdations for Harold Jacobs books. I also just found a program called VideoText(very expensive).
What did you use?