Measurement Man

Dan Koretz, a professor of education at the Harvard Graduate School of Education and a member of Education Sector's Research Advisory Board, has a new book out from Harvard University Press called Measuring Up: What Educational Testing Really Tells Us. It's a great primer, written in plain English, on the important but often opaque subject of standardized testing. Koretz illuminates the complexities of "sampling error," "statistical significance," "reliability," and a host of other tough terms. And he ends with a chapter on "the sensible uses of tests." At a time when standardized tests are the single more influential force in at every level of education, roadmaps like Measuring Up are a valuable comodity.