While I agree with the concerns of many parents that over-testing is damaging to children and subverts the purpose of education, I don't believe that the Common Core has set the bar too high, at least in math, my area of expertise. I know from direct experience with children that we can expect far more thinking of them than is commonly held. That is the Core Belief of my blog.
The problem is that teachers have not received the necessary preparation and the testing has been rushed and lacking in quality control.
We're trying to set the bar higher for children without raising the bar for those responsible for implementing these changes. That is irresponsible at best and criminal at worst.