Education in which boys and girls are taught separately (single-sex education), e.g. all-boys or all-girls schools.
私の高校は別学だったので、男女が同じクラスになることはなかった。
My high school was single-sex, so boys and girls never ended up in the same class.
別学と共学にはそれぞれ利点と欠点があると教育委員会で議論された。
The board of education discussed that single-sex and coeducational systems each have advantages and disadvantages.
両親は娘を別学の女子校に入れるかどうか迷っている。
The parents are undecided about enrolling their daughter in a single-sex girls' school.