Employees at Bishop State Community College, in Mobile, Ala., misused more than $400,000 during the last four fiscal years, including more than $293,000 in federal financial aid, according to a state audit obtained by the Associated Press.

The audit, which covered October 1, 2002, to September 30, 2006, also found that a financial-aid manager ordered the destruction last year of numerous files related to federal aid and that students’ records had been improperly changed to raise their grades.

Thirteen people have been charged with theft so far as a result of the state’s investigation into the college’s finances. The U.S. Department of Education also has restricted the college’s ability to draw federal financial aid, and the Southern Association of Colleges and Schools has put the college on probation.