This is the 11052nd most frequent German word.
schulleiter
School principal.
Here, 'Schulleiter' is used as a noun to refer to the head of a school.
Der Schulleiter begrüßte die neuen Schüler herzlich.
The principal warmly welcomed the new students.
In this sentence, 'Schulleiters' is the genitive form of 'Schulleiter,' showing possession.
Die Entscheidungen des Schulleiters beeinflussen das gesamte Lehrkollegium.
The decisions of the principal affect the entire teaching staff.
This usage shows the feminine form 'Schulleiterin' of the word, referring to a female principal.