It's not homeschooling, it's unschooling.
My parents were both teachers at private or Christian schools while I grew up, and every year, there'd always be a new couple of kids who's parents couldn't quite hack it anymore, so they'd send them to school. But couldn't bear to send their kids to those secular, godless, evolution teaching, sex driven, minority filled public schools, so they'd send them to my school instead.
Those kids were always some of the dumbest, most ignorant people on the planet. Some figure it out, but most don't. They just double down. They were usually barely literate, couldn't do math, and had no social skills. It's how you end up with a 19 year old freshman who can't read Dr. Seuss.
I know teachers aren't paid much, but if you have the audacity to say that you can do a better job than 4 or 5 professionals at teaching your kid every subject, you should have to take a test to be certified, and your kid needs testing too. Some states require it, most don't, and it shows.