As more colleges move to "test optional" admissions policies, the debate over the utility and interpretation of standardized-test scores continues. In this article, the author interviews Daniel Koretz, a professor of education at Harvard University and author of "Measuring Up: What Educational Testing Really Tells Us". Koretz…

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…