Thursday, March 04, 2010

How Data-Driven are we REALLY?


Rhee claims that her new principals are replacing ones who were allowing standardized test scores to go down. She also claims that her new principals are doing much better at raising those test scores than the veteran principals. Much of the media keeps repeating her claims, without actually doing any investigation to see whether these claims are true.

As usual, Rhee’s claims are NOT true.

Two blogs ago, I showed in detail that Rhee’s second claim – that schools under the new principals she has appointed are doing much better – is false. Today, I will show that even by her own criteria, the first claim is false: she’s not even replacing the right principals.

Many awesome charts follow, e.g.:

A teacher after my own heart.

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