DES MOINES, Iowa (AP) — Federal education officials say Iowa and Nebraska have the top high school graduation rates in the country.

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 data also show a narrowing gap between the national graduation rate of white students and those of black and Hispanic students.

The Education Department’s National Center for Education Statistics released the information. It says the national rate is the highest level since states adopted a uniform way of calculating their data five years ago.