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"Terry Dade, the 33-year-old principal of Tyler Elementary in Southeast Washington, freely describes himself as a 'data geek' who shares Chancellor Michelle A. Rhee's educational creed: Digging relentlessly into student test scores, diagnosing weaknesses and tailoring teaching to address them can ultimately lift a school's academic performance.
Hired by Rhee as a first-time principal last year, Dade dug out a success story at Tyler, with double-digit boosts in reading and math proficiency. It's also left Dade with a challenge that has thwarted many other principals: what to do for a second act."