校こう外がい

noun which may take the genitive case particle 'no', noun

outside school; off-campus

Refers to areas, activities, or events that are outside the school grounds or not part of the school curriculum.

• 校こう外がい学がく習しゅうで博はく物ぶつ館かんに行いった。

  We went to the museum for an off-campus study trip.

• 校こう外がいでの活かつ動どうも大たい切せつだ。

  Activities outside school are also important.