school subject; curricular subject; curriculum area
Refers to a subject taught at school, such as mathematics, Japanese, science, or social studies; also used more broadly for the set or category of subjects in a curriculum.
好きな教科は数学です。
My favorite school subject is mathematics.
小学校の教科には国語や算数がある。
Elementary school subjects include Japanese and arithmetic.
He teaches the subject of science at a junior high school.
In elementary school, students study a variety of subjects.
My best subject is math.
English is a subject I'm not good at.
Next week there are tests in several subjects.
tool subject
elective subject; elective class
extra-curricular activities
textbook; school textbook
MEXT-approved textbook; government-authorized textbook