Actually, if the teachers are, in fact, at the lower end of the spectrum in general, that means that all those parents who homeschool their kids, who are not teaching majors, are actually better qualified to teach their own children than your average public school teacher.
Anyone who feels their skills are better than the vast majority of teachers can easily transition into the profession. Perhaps more should consider doing so. I am considering it, though not for any reasons of ego. I won’t do it until I feel I can do as good of a job as my parents do every day.