This year the Center on Education Policy (CEP) analyzed data on the achievement of different groups of students in two distinct ways. First, it looked at grade 4 test results to determine whether the performance of various groups improved at three achievement levels--basic and above, proficient and above, and advanced. Second, it looked at gaps…

Recently, federal legislation has been implemented requiring that public school students meet a specified performance level of academic proficiency by the 2013/2014 school year. This reform movement, known as "No Child Left Behind" (NCLB), was passed by Congress and incorporates many of President Bush's educational reform proposals…