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Would there be a sound if a tree falls in the forest and Whitney Tilson is under that tree? In fact would anyone care? Every time I read Whitney's emails I can;t help but think of Tommy and "See Me, Feel Me." This caustic desperation for attention that Whitney is so desperately seeking, so desperately lacking.
In fact I hate to say it, in one of today's email from Whitney, I agree with him about something he wrote. Yes, a clock is always correct twice a day, and Ruben Brosbe can use the bathroom my himself.
In The New York Times of December 26, 2010, Sharon Otterman writes that it is far from an exact science of rating teachers using value added assessment. Whitney, in his email goes on to say, "That value-added systems are far from perfect and must be improved, and also need to be used with care when evaluating teachers." Hey, way to go Whitney. All right. I had a smile on my face. Perhaps he found religion. Or perhaps after years of searching interstate rest area rest rooms he came (pardon the pun) across that perfect companion and was in a joyous mood.
Unfortunately reality knocked came a knockin'. I read on, "But we mustn’t let perfection be the enemy of the good," Whitney blabbered. Perfection is the enemy of good? God is perfect, so can we therefore claim that God is the enemy of all that is good? But Whitney blustered more, "Even if the system can only correctly identify the very worst teachers, that’s REALLY (Whitney's emphasis) valuable given the damage such teachers do to children."
Smell that? I smell a contradiction. Whitney says, and I agree, that the value added system is far from perfect. But on the other hand, he is claiming that using this imperfect system it can correctly identify not bad, but the worst teachers.
Now, it is entirely possible that Whitney read only what he wanted to read. Perhaps he missed this from the Times, "The rankings are based on an algorithm that few other than statisticians can understand," so Whitney what enables you to understand these algorithms? Do you have some power we don't know of?
What about the teachers at PS 321 in Park Slope? "In three other classrooms at this highly ranked school, fourth-grade teachers were ranked among the worst in the city at teaching math, even though their students’ average score on the state math exam was close to four, the highest score." So are these the worst teachers? You yourself just said that imperfection in VAA is OK as long has it identified the worst teachers. Well these three teachers were identified as the worst. Do you think they should be terminated.
I'm not going to go into why VAA is wrong. I have done it enough in this blog to do so. The only other analogy I can think of right now is my opposition to capital punishment. I have many reasons, but one of them is as long as there can be one iota of a chance that the wrong person will be put to death, that is one person too many. Our justice system no matter how highly we think of it is imperfect. The same with VAA. It is imperfect, and as long as there can be one iota of a chance that a teacher will be wrongly judged or terminated, that is one teacher too many.