pupil, educatee, student (especially in junior high schools (中学校) or high schools (高校) in Japan)

instruction, briefing

to instruct, to brief

(dialect, Hakata) teacher, professor

an elder / a scholar / a teacher or a professor / sensei (Japanese martial arts teacher) / sir, a polite form of address to teachers, doctors, etc.

a title used after the name of teachers, doctors, lawyers, or certain other professionals

mathematics (field of study)

student council

teachers / doctors

mathematician