Statewide, the on-time graduation rate for the class of 2015 rose about one percentage point from the year before.

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While some Seattle-area school districts made significant increases in on-time graduation rates for the class of 2015, Washington’s overall rate remained at slightly more than three-fourths of all students statewide.

About 78 percent of all students in the class of 2015 graduated within four years, compared with 77 percent the year before, according to data released Thursday by the state superintendent’s office.  Seattle matched that state average, up from 71 percent rate two years ago.  And Highline’s rate rose above 70 percent for the first time in five years.

A number of Puget-Sound area districts also had rates higher than 92 percent — those included Issaquah, Lake Washington, Snoqualmie Valley, Steilacoom, Vashon Island, Bainbridge Island and Mercer Island.

Broken down by gender, the statewide rate was 82 percent for females and 75 percent for males. And among racial subgroups, Asian students had the highest graduation rate, at 88 percent, while American Indian/Alaska Native students had the lowest, at 56 percent.

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But everybody was moving up, including low-income, migrant and homeless students.  And the state’s five-year graduation rate rose to 81 percent.

For details on all of the state’s 295 school districts, see the Office of Superintendent of Public Instruction’s website.