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AUGUSTA, Maine (AP) - Maine schools will find out their grades when officials release their new report cards this week.

The new A-F grading system for schools implemented last year under Republican Gov. Paul LePage is designed to bring transparency and accountability to the state's public school system.

Grades are based on student proficiency and how students are improving. At the high school level, graduation rates also factors in.

The report cards will be released to schools on Tuesday and to the public on Thursday.

Maine Department of Education Commissioner Jim Rier will visit this week with some of the 110 schools that have shown letter grade improvements. Last year, most Maine schools merited only a C grade, while 31 percent of the state's high schools received a D or an F.

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