CHEYENNE, Wyo. (AP) — Wyoming's four-year high school graduation rate has risen for the fifth year in a row to its highest level since at least 2010.

The state Education Department reports that 81.7 percent of students graduated on time last year.

State Superintendent of Public Instruction Jillian Balow said some factors that likely contributed to the increase were improved data accuracy; a focus not only on college readiness, but also on career and military readiness; and local efforts by individual districts.

Fifteen school districts across the state graduated 90 percent or more of their students in 2018, up from 14 districts in 2017. Four of those districts had 100 percent graduation rates.