My impression was that Common Core is not a curriculum (although it will surely trigger publication of new textbooks), per se, but a set of common standards. ... Thus, it will be possible to compare test scores between districts and states, using the same tests and knowing they have targeted the same set of standards.
I really wish this turns out to be true. But I'm dubious, because the political and other stakes are too high. The cynic in me thinks "The same people are still in charge; they've mostly found ways to get around attempts at
meaningful evaluation in the past, and they'll find a way to get around it again with Common Core."
A new curriculum (or set of standards; whatever you want to call it) and buzzwords like
RIGOR! won't change deeply flawed mindsets like
everyone can be proficient at the same stuff at the same age and
everyone should go to college.