My husband and I were both public schooled.
Because of what we learned in public schools, we have chosen to homeschool for now.
If the public system has equiped you to homeschool competently, it's done pretty well. If not, ....
The public schools severly lacked in teaching many things. I grew up in the Bay Area, my husband grew up in rural MN.
History classes were ok, for the most part.
Goverment classes we learned to laugh at the right and were taught that the issues of the left were serious.
Hopefully things have moved on. The early days of "citizenship" as a subject idea were pretty flaky, but I dare say the same was true when science, say, was first taught in schools.
English classes, books like Judy Blume's Wifey (which is a book that condones extra marital affairs) were allowed for book reports.
Allowed, or you were forced to read and agree with it?
Science taught the lies of evolution.
Whether you agree with it's conclusions or not, evolution is good science, and must be taught as such. Anyone who doens't understand why it's good science certainly isn't qualified to teach science to anyone.
Math classes were ok.
Pleased to hear it.

Planned Parenthood came to our Health classes on a regular basis.
I wonder how much time was actually spent on it. Our perceptions can be very misleading as to what we spent our time on at school.
As far as not being qualified to teach certain subjects.....
I didn't know how to potty train a child until I actually had to. We got through potty training between the ages of 2 and 3 so I think we can get through just about anything else.
Which show's how much you know.
I know enough to know that I've been a mom for 18 years and I'm no where near an expert.
Being a mum is no less a difficult job than being a teacher, but it isn't the same job.
Different children learn at different rates. I know my children better than any teacher who has to deal with 20-30 of them at a time.
Of course. Homeschooling certainly has some advantages, and that one is undeniable.
Then you should do everything in your power to avoid the public schools, private schools, homeschools, etc.
My pastor's wife is a teacher. She went to school to be a music teacher. She teaches music and English, yet English wasn't one of her strong points in college.
What you are good at, and what you can teach well, are not necessarly the same thing.
Nevertheless, I think it is one of the failings here is that teachers commonly teach way outside their area of training. This is much less common in England.
Even so, she's still only paid to understand and try and keep up to date in two KLAs, not all of them (which you have to do).
She does a lot of learning as she is teaching.
Of course, any teacher does, but learning content as you go (reading one page ahead in the textbook, as we say) isn't the same as trying to teach a subject where you don't understand the issues. When you teach maths, do you spend as much time reading up on how maths should be taught, what the issues for kids are, etc, as you spend actually teaching it? And that's supposing that you know the content already.