Gene V Glass: Education in Two Worlds: Houston, You Have a Problem!

When someone like Diane Ravitch says using tests to evaluate teachers is "junk science" (as she did recently during her keynote at the NCTM conference), I disagree. While Ravitch might be willing to toss out tests and measurement all together, I'm not. I think the science of measurement is very useful, and I separate the science from the too-often harmful application of that science to judging teacher performance. For matters like this, I'd rather listen to someone like Gene Glass -- who better than a veteran psychometrician to understand the strengths and weaknesses of the science and to judge how to apply the results appropriately?