This year the Center on Education Policy 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 between…

As traditionally structured, American schools, in general, have found it more difficult to educate some students than others. In Washington State, as in most other states, the single best predictor of student achievement at the school level is the percentage of students on free or reduced (f/r) lunch status (Abbott & Joireman, 2001). This fact…