Data released Tuesday by the Education Department show Iowa ranked first among all states with a graduation rate of 90.5 percent for the 2013-2014 school year. Nebraska came in second with a graduation rate of 89.7 percent for the same period.
The national high school graduation rate is 82.3 percent, slightly higher than the previous school year. The report also shows a narrowing gap between the national rate of white students and those of black and Hispanic students.
The Education Department's National Center for Education Statistics released the report.
It says the national rate is the highest level since states adopted a uniform way of calculating their data five years ago.