Few parents are prepared to deliver calculus, physics, chemistry, or computer science topics with a high level of competence.
That’s why co-op classes at the high school level are very popular. We have friends whose kids have done great in medical school and engineering who were homeschooled, with the coop classes and then community college dual crediy helping them finish high school.
In re calculus physics chemistry....
Even in my super intellectual public high school in the 70s maybe 5 percent of the student body took those.
Currently in our public school system the handful that qualify leave campus and take them at the community college. Not even offered on the public school high campus any more.
Home school either get an online course or send them to community college if you can’t teach them.
Easy peasy and you get college credits.
One of my kids has a BS in physics another a BS in Comp Sci. Twas not an issue.