Last week blogger Valerie Strauss — in her excellent column in the “Washington Post ” talked about how teacher effectiveness is now being measured by economists, not educators:

“It is astonishing to realize the extent to which education debates are now framed and dominated by economists, not by educators or sociologists or cognitive psychologists or anyone else who actually spends time in classrooms. My bookshelves are chock full of books that analyze the teaching of reading, science, history, and other subjects; books that examine the lives of children; books that discuss the art and craft of teaching; books about the history of educational philosophy and practice; books about how children learn.

Now such considerations seem antique. Now we are in an age of data-based decision-making, where economists rule. They tell us that nothing matters but performance, and performance can be quantified, and those who do the quantification need never enter a classroom or think about how children learn.

So the issue of our day is: How do we measure teacher effectiveness?…”