WASHINGTON (AP) -- A new report says the number of Ohio high schools considered "dropout factories" jumped from 75 to 135 over the eight years ending 2010.

The data is part of research being presented Monday at the Grad Nation summit in Washington organized by the children's advocacy group America's Promise Alliance.

In Ohio, the number of students in dropout factories - schools that fail to graduate more than 60 percent of students on time - rose by about 12,500.

The state's graduation rate was up 2.1 percentage points to 79.6 from 2002 to 2009.

The nationwide graduation rate was 75 percent, and dropout factories fell by more than 450, with 1,550 remaining.

The report was written by researchers at Civic Enterprises, a public policy firm, and the Everyone Graduates Center at Johns Hopkins University.

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Online:

America's Promise Alliance: http://www.americaspromise.org/

Civic Enterprises: http://www.civicenterprises.net/

Everyone Graduates Center at Johns Hopkins University: http://www.every1graduates.org .