Sam Dillon:

When the Obama administration was seeking to drum up support for its education initiatives last spring, Secretary of Education Arne Duncan told Congress that the federal law known as No Child Left Behind would label 82 percent of all the nation’s public schools as failing this year. Skeptics questioned that projection, but Mr. Duncan insisted it was based on careful analysis.
President Obama repeated it in a speech three days later. “Four out of five schools will be labeled as failing,” Mr. Obama said at Kenmore Middle School in Arlington, Va., in March. “That’s an astonishing number.”
Now a new study, scheduled for release on Thursday, says the administration’s numbers were wildly overstated. The study, by the Center on Education Policy, a Washington research group headed by a Democratic lawyer who endorses most of the administration’s education policies, says that 48 percent of the nation’s 100,000 public schools were labeled as failing under the law this year.