HARRISBURG, Pa. -

Pennsylvania's high school graduation rate is already a respectable 84 percent, but state education officials are hoping to improve on that.

The agency is introducing a new system to make it easier for educators to identify and help youngsters at risk of dropping out, said Tim Eller, a spokesman for the education department.

Eller said new performance profiles for individual schools also will draw attention to those with dropout problems.

U.S. public high schools have hit a milestone graduation rate of 80 percent, according to a report released Monday at a national education summit. Researchers project a 90 percent rate by 2020.

Pennsylvania ranks in the top half of 2012 state graduation rates, which range from 63 percent to 89 percent.