PHOENIX -- The federal government reports that Arizona's graduation rate for the 2009-2010 was 74.7 percent, well below the national average of 78.2 percent.
Arizona had the highest dropout rate at 7.8 percent.
The rates are being reported by the National Center for Education Statistics, which is part of the U.S. Department of Education.
Graduation rates indicate the percentage of ninth graders who go on to graduate within four years. This is the highest level of on-time graduation in almost 40 years.
States' rates ranged from 57.8 percent in Nevada at the low end to 91.4 percent in Vermont at the high end.