State investigators found suspicious patterns of changed answers on tests at Philadelphia's Roosevelt Middle School
When one seventh-grade student at Philadelphia's Roosevelt Middle School took state reading and math exams in 2009, answers were erased 35 times - changed from wrong to right every time.
The odds of that happening naturally are more remote than 1 in 100 trillion. Winning the Powerball lottery, whose odds are still an astronomical 1 in 195 million, is much easier.
Eighty-two students at Roosevelt - one-quarter of the school's seventh and eighth graders tested - had statistically suspicious patterns of changing answers on state tests in 2009, state-appointed investigators have found.
The East Germantown school - hailed by Superintendent Arlene C. Ackerman last year as a district pacesetter - came under scrutiny in May after several Roosevelt teachers told The Inquirer that they
