How to translate 'grade school 風紀/風紀員' into English? When I was a grade school student in Hong Kong, some students in school would be assigned positions of  duty or authority. For example, 班長 (class representative) , 行長 (roll leader) and 風紀(whose duty is to maintain order in teachers' stead, for example, keeping peace during recess, help maintaining order in morning speech etc.)

I can't find a translation of 風紀 in this context and  Google translates 風紀員 as "discipline officer". I wonder is it appropriate to call a student 'officer'

Should I translate 風紀 in this context as 'student discipline officer' or 'student discipline team member? If there's an existing official translation, please let me know
It's called "prefect".

not "perfect" of course :-)