I know nothing about the quality of these teachers, but I can say based on my experience and insight that the quality of the students matters most, followed clo

I know nothing about the quality of these teachers, but I can say based on my experience and insight that the quality of the students matters most, followed closely by the quality of the parents and the home life and family culture they provide. Teachers are a bit down the list. Because a student can always learn outside school -- and really, will be or should, both before and after the primary school years. There's only a narrow window in a person's lifetime where there is forced public schooling, and that's the only period, at least for most people, where the teacher quality is going to matter.