Study: No Child Left Behind Slowing Academic Growth in Non-Urban Schools

In both reading and math, the study determined, test scores have gone up somewhat, as each class of students outdoes its predecessors. But within grades, students have made less academic progress during the school year than they did before No Child Left Behind went into effect in 2002, the researchers said.
That finding casts doubt on whether schools can meet the law's mandate that all students be academically proficient by 2014. In fact, to realize the goal of universal proficiency, the study said, students will have to make as much as three times the progress they are currently making.
The study was conducted by the Northwest Evaluation Association, which develops tests for about 1,500 school districts in 43 states. To complete it, the group drew upon its test data for more than 320,000 students in 23 states, a sample that it calls "broad but not nationally representative," in part because the biggest cities, not being Northwest clients, were not included.