Students learn more from certified teachers than they do from uncertified teachers, even when the uncredentialed teachers are Teach For America recruits from some of the nation's top colleges, a Stanford University research team concludes from a study of test scores in Houston. Findings from the study, which researchers presented in Montreal on…

President Bush says that the No Child Left Behind Act is working, pointing to student-achievement results from a single subsection of the National Assessment of Educational Progress (NAEP) and tentative Reading First data. But the evidence available to support his claim is questionable. The data Mr. Bush cited are from just the "long-term…