I don't think department chairs generally have the power to change grades without the instructor's signature, but usually the Dean or Provost or someone higher up the chain does. I know it happened at one school I've been at where a grade I gave was changed without my permission, but it was done at the higher level (the department chair disagreed with the change as well).
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timeasmymeasure
no subject
Date: 2009-09-01 02:27 pm (UTC)