theodp writes: "Time reports that sometimes No-Child-Left-Behind really means No-Test-Scores-Left-Behind, creating opportunities for data forensics firms like Caveon (check out their Ten Most Wanted Cheaters poster). Take Houston's Forest Brook H.S., which was a shining example of school reform. In 2005, after years of rock-bottom test scores, 95% of its 11th graders passed the state science test. Teachers were praised and the school was awarded a $165,000 grant by the governor. But an investigation found a host of irregularities and last year's testing was monitored by an outside agency. Test scores plunged and only 39% passed science."
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"