I wont defend or repudiate the Common Core program itself, but generally it seems to be an excellent example of:
1) social engineering by Nanny G. that didnt go as planned or that had unforeseen consequences
2) social engineering that can’t even be measured in any kind of rational way so that all of us can see its clear success or failure (see opposing viewpoints and studies that show success, as reported in this article)
3) social engineering that we are now stuck with, apparently no backing out, although bandaids and superficial fixes will be applied to further the chaos until a dozen years from now the entire program will be tossed out and re-invented by another wannabe-fixer of human kind
A coupla engineers over on the MMM site a few years ago talked about the math concepts of Common Core. They liked ‘em and saw utility in those educational concepts and methods. But they were engineers, so there ya go.