 In the humanities and engineering, where deflation has been slower, 2008–09 brought significant movement.A's accounted for 42.5% of grades in the humanities last year and 40.6% of grades in engineering, both down two percentage points compared to 2007–08.In the period from fall 2006 through spring 2009, the most recent three-year period under the new grading policy, A's accounted for 40.1% of grades in undergraduate courses, down from 47.0% in 2001–04, the three years before the faculty adopted the policy.