This is the 3965th most frequent Korean word.
원장을
"원장을" is the accusative form of "원장," meaning "director" or "head" of an institution (e.g., a school or hospital).
In this sentence, "원장을" is used to explicitly mark the direct object (the director) of the clause, indicating that the verb '초청하여' (invited) is performed upon them.
원장을 초청하여 학교 행사에 대해 논의했습니다.
We invited the director to discuss the school event.
Here, "원장을" identifies the principal as the person whom the parents are initiating an action towards, conveying relational specifics in the context of the meeting.
학부모들이 원장을 만나 문제를 해결하려고 합니다.
The parents are meeting the principal to resolve the issue.
In this instance, "원장을" is used as the direct object of the praise action, making clear who is being praised in the context of the clause.