(Guest post by Greg Forster)
I have a post at OCPA on taking ignorance seriously:
Some states managed to have success in some cases—Massachusetts’ standards reforms and Florida’s mix of school choice, exit exams, and incentives to raise test scores across demographic groups are notable examples. But the overall story was failure. We just couldn’t take these good ideas to scale…
Why was school choice the only winner? Because it takes our ignorance seriously. It doesn’t try to generalize the content of education across millions of unique children.
Throwback to my review of the evidence on Pre-K included at no extra charge!
Jay P. Greene's Blog 
Outstanding piece- BOOOOOOOOOOOM!
Thanks!