When Mayor Adrian M. Fenty announced the continued growth of standardized test scores for District students Monday, he hailed it as "powerful evidence of the incredible work being done by teachers, principals and most importantly our students."
What Fenty did not say was that the two-year improvement in District of Columbia Comprehensive Assessment System results -- including an average of nearly 15 percentage points in the pass rates on elementary reading and math tests -- was also the product of a strategy that relied on improved statistical housekeeping.
These include intensive test preparation targeted to a narrow group of students on the cusp of proficient, or passing, scores, and "cleaning the rosters" of students ineligible to take the tests -- and also likely to pull the numbers down.
Chancellor Michelle A. Rhee described some of these approaches as the pursuit of "low-hanging fruit."
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