This is spot on. A (good/proper) Ph.D. program is designed to facilitate entry into the research industry, not to teach elementary and basic subject matter (whi

This is spot on. A (good/proper) Ph.D. program is designed to facilitate entry into the research industry, not to teach elementary and basic subject matter (which is everything up through the first couple of semesters of undergraduate education). And the rigid, controlled curriculum is not only the antithesis of the teaching environment graduate students are accustomed to, it's the antithesis of the actual spirit of inquiry and learning in general that draws people to a graduate program. Students in most K-12 schools, in my estimation, learn by accident and in spite of the system, not as a result of it.