From the Associated PressThe Indiana State Board of Education is looking to revamp its new A-to-F grading system for schools after objections from many high schools with high test scores that received C ratings. The revisions would have given about half of all high schools grades of A or B. This year, 19 percent were rated A or B because many schools had inadequate progress by at-risk students. The Indianapolis Star reports that state schools superintendent Tony Bennett worries the new scale might not be tough enough. The new rules would have rated 16 percent of high schools with a D or an F--down from 21 percent under the existing rules. The board expects public hearings on the proposed changes in January and February.