While I understand what you mean by "forget their foundation," in the case of government schools there is a systematic problem: Public school administrators are answerable to school boards and state boards of education, both of which are essentially political. When politicians pay attention to education, it is usually to score political points with their opponents. It tends to be symbolic rather than substantial. Many front-line classroom teachers do their best, but they are working under a political and bureaucratic system that is a nightmare most of the time. I've shifted to private education because I'd much, much rather deal directly with students and parents. I can have a human-to-human relationship with students and parents. There is no human-to-human relationship with most bureaucrats and in political battles (e.g. "Politics is war by other means").
I tend to think that a lot of times institutions fail because they forget their foundation. I believe that the foundation of a school is it's students, to a certain extent. Certainly, you need teachers (or guides in the case of Ko), but a school that doesn't have students is just a staff assembly, vs a group of students who don't have a teacher, can be any group of people who have elected to teach themselves. Because schools in the US don't view students as foundational, or even teachers as foundational for the matter, they continue to neglect the well being of either for usually grades or tests.