学生代表
a boy or girl who often represents his or her school on formal occasions
We are delighted to announce that Dominic Carter will be our next head boy.
Prayers were read by the head boy.
The visitors were shown around the school by the head boy.
She had a Catholic education and became head girl of her school.
There is no doubt that she was the most popular head girl in the history of the school.
See also: head noun (LEADER)