How many high school teachers in public school systems have PhDs? Heck, how many private school teachers have their PhD? Since the answer is “almost none,” how are these people managing to teach 30 kids the stuff you say my wife and I can’t teach one kid?
The very idea that it takes an advanced degree to teach or facilitate the learning of stuff you’ve already mastered in detail is just absurd, and that characterization was said to me by a high school principal friend of mine who has a masters of English and Ed and an honorary doctorate.
Don’t you want home-schooled children to be able to do the highest math possible at a high school level? The lack of our current teachers’ knowledge is just one of the problems in the current system; the fact that a math or science teacher is paid on the same scale as an English teacher is another (all necessary, but some topics simply require a lot more education/training/IQ than others).
The fact that I mastered these things decades ago doesn’t help, either. On top of that, at least one parent (both if they don’t earn enough) have to generate income (that is where the second PhD comes in). NJ isn’t a cheap place to live, either.