My wife, who didn’t even complete Algebra 1 homeschooled my two sons who are both engineers.
We went with private school, but they supported homeschooling co-ops and now “pods” before it was cool. Thus we met a lot of homeschooling parents, whether they did it on the transition to private schooling or long-term.
Any parent can teach kids elementary grade content, if they have the patience and time. Hence the joke “If you can’t teach a 5 year old the alphabet, that is your problem, not mine.”