Today's enthusiastic embrace of data has waltzed us directly from a petulant resistance to performance measures to a reflexive and unsophisticated reliance on a few simple metrics--namely, graduation rates, expenditures, and the reading and math test scores of students in grades 3 through 8. The result has been a nifty pirouette from one troubling mind-set to another; with nary a misstep, we have pivoted from the "old stupid" to the "new stupid."