On Thursday, U.S. News and World Report released its 2010 graduate school rankings. The School of Engineering remains top engineering graduate school in the country, a rank it has held since U.S. News began ranking engineering schools in 1990. None of the top five engineering schools changed ranks between last year and this year. Among business schools, Sloan moved up two ranks to third place, taking the spot held last year by the University of Pennsylvania.U.S. News ranks schools based on a weighted survey of schools as well as of faculty and administrators. The engineering rubric evaluates quality assessment (40 percent), student selectivity (10 percent), faculty resources (25 percent), and research activity (25 percent). The business rubric evaluates quality assessment (40 percent), placement success (35 percent), and student selectivity (25 percent).