We are seeking applications for the position of Professor (permanent) / Head of School (fixed term), School of Economics & Finance.
http://www.career.edu/index.php?post_id=5426

When my child gets a note on her rapport from the Schulleitung, it normally means a note from the school's director, or group of teachers including the Director, i.e. the Headmaster, mostly from the class teacher represnting the Headmaster/Director.

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Note added at 2 hrs (2008-07-06 08:22:13 GMT)
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It could also include the administration and the parents' association - the headmaster' representatives consisting of his deputy, the administration, the parent-teachers' association and the class teacher.

When referring to the principal and his cohorts, we can refer to them as the school administration in the U.S., but this would apply not just to the principal in case that's what your looking for. If you mean someone from the administration, that could be a school administrator.

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Note added at 2 days9 hrs (2008-07-08 15:00:33 GMT)
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This is a pretty general term however, so I don't know if it fits the bilol here.