1Coeducation — an educational system in which males and females study together in the same school (often used for high schools and universities).
この高校は昔は男子校だったが、今は共学になっている。
This high school used to be a boys' school, but now it is coeducational.
親は子どもを共学の学校に通わせたいと思っている。
The parents want their child to attend a coeducational school.
共学と別学にはそれぞれメリットとデメリットがある。
Coeducation and single-sex education each have their own advantages and disadvantages.