closed campus

(education) A campus that forbids unauthorized entry or exit during the school day.

Japanese Meaning

授業時間中、正規の許可なしに出入りが禁止される学校敷地。

The high school implemented a closed campus policy to prevent students from leaving during the day.

その高校は授業時間中の無断出入りを禁じる方針を導入し、生徒が学校を離れるのを防ぎました。

Sense（1）

(education) A campus that forbids unauthorized entry or exit during the school day.

closed campuses

（ plural ）