By Tony Romeo

HARRISBURG, Pa. (CBS) – For the second time in less than three months, there’s a change at the top in the Pennsylvania Department of Education.

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The turnover continues in the administration of first term Pennsylvania Governor Tom Corbett, who on Monday requested and received the resignation of William Harner, the former superintendent of the Cumberland Valley School District in suburban Harrisburg.

Harner had served as acting Education Secretary since June first, after the departure of Ronald Tomalis.

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“There are no differences of opinion on education policy – this is entirely a personnel matter,” says Lynn Lawson, spokeswoman for the governor.

But Lawson confirms that Harner’s departure is related to something that turned up in background check.

Harner will be replaced by the department’s executive deputy secretary,  Carolyn Dumaresq, who will become acting Education Secretary. Lawson could not say whether Dumaresq will be nominated for the job permanently.

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