[Excerpt] Three presidents, the National Governors Association, numerous blue ribbon panels and national teachers unions have called for states to develop content standards for core subjects, examinations assessing student achievement aligned with the content standards and accountability mechanisms for insuring that students achieve these standards. In 1999 eighteen states had minimum competency exam (MCE) graduation requirements, 19 rewarded successful schools, 19 had special assistance programs for failing schools, 11 had the power to close down, take over or reconstitute failing schools.