姉し妹まい校こう

noun

sister school

Refers to a school that has a formal partnership or exchange relationship with another school, similar to 'sister city'.

• 私わたしたちの学がっ校こうはオーストラリアの高こう校こうと姉し妹まい校こうです。

  Our school is a sister school with a high school in Australia.

• 姉し妹まい校こうの生せい徒とが来らい週しゅう、日本にほんに来きます。

  Students from the sister school are coming to Japan next week.