This is one of the better articles I have read regarding the education issues that are far too common. More importantly, it actually addresses the root problem instead of reiterating what the the results should look like. Applicability to a job is nice, but it is a goal, not a cause. Switching to new teaching standards such as New Math or Common Core is also a goal; they are selected with the hope that students will learn important, modern methods instead the techniques we used to use.
The problem is that goals don't matter if most people don't actually reach them, and we shouldn't expect people to reach any of these goals when many[1] of the teachers are just as unprepared.
The article discusses one approach to fixing this, that seems to have had some success in Japan, where teachers have a far lighter workload, and are given paid time to research methods of teaching and opportunity experimentally try them, and far more opportunities to continue their own education and learn the from other teachers. This means a few months every year, not a weekend conference once a year. There are probably a variety of ways to solve this problem, but any proposal needs to address teacher ability first[2].
[1] Note: this is about elementary level teaching, and "many" != "all".
[2] As Chevalier discusses, the availability of massive amounts of educational opportunities on the internet might be changing the entire concept of "getting an education".