noun
student council president; head of the student council
Refers to the elected leader of a school's student council. Common in junior high and high school contexts.
彼は生徒会長に立候補した。
He ran for student council president.
生徒会長として、学校のルールを改善したい。
As student council president, I want to improve the school rules.
Compound of 生徒 (student), 会 (council/association), and 長 (leader/head).