text: Third graders Danielle Levin, 8; Paige Simpson, 8; and Daniella Gama-Diaz, 8; from left, work on a lesson at Eagle Elementary School in West Bloomfield Township, Mich., Thursday, March 9, 2006. Under the federal No Child Left Behind Act, all students must achieve proficiency in reading and math by 2014. Public schools must test students periodically in reading and math and report the school's overall measure of success. No students' scores can be excluded from the overall measure. (AP Photo/Carlos Osorio