I have to admit up front that my views on the K-12 system are jaundiced by 7 years as a high school science teacher and by having a wife who lives at school (she teaches Grade 6/7) just trying to keep up with all of the demands placed on the system today. I left teaching ten years ago, when the "profession" became a union.
My experience with the system suggests to me that it does not have the inherent capacity to lead anything. Provincially mandated curricula, publicly published test scores, minimal resources, and increasing class sizes, all force teachers into compliance and survival mode. To stay abreast of current affairs takes a high degree of commitment and requires a great deal of effort from an already stressed group of adults (teachers) to whom we entrust our children and, in effect, the future of our society. To include time and real content on meaningful current affairs in most provincially examinable courses (where our best and brightest must gravitate to, if they wish to continue their education) is no mean feat -- especially when these topics will not appear on the exam, the students know it and also know the time taken up with these topics may mean they are not fully prepared for their exam. With increasing pressure from the post-secondary system for higher and higher entry-GPA's this situation is only going to get worse, not better.
I even found it difficult to facilitate my students exploring the leading edge of science. This was a time-consuming effort for me and the students, as the curricular materials did not support this. It also often led to confusion on the part of the students when I had to help them unlearn what they had come to know about, say, cell biology, because the provincial exam was based on an understanding of cell biology that was at least a decade or two old.
Mike Robinson's ideas about a socratic approach to learning within the K-12 system are wonderful and ought to be allowed and supported. The fact that the kids responded so well to it is a testament to how thirsty they are to be engaged in their own learning. Unfortunately, the system as a whole is making it harder and harder on teachers to find the space, time and energy to take this approach.
So, hating to be a glass half-empty kinda guy, I'd have to say that the system, as it is currently constructed, can only follow. And, this is to our detriment as a society!