high school student
뭐여, 고등학생 이여?
What? Are you a high school student?
— 택시운전사 (2017)
고등학생 이야?
Are you a high school student?
— 날씨의 아이 (2019)
고등학생 정도?
Around high school age?
고등학생?
A high school student?