ベル着ちゃく

noun, noun or participle which takes 'suru'

being seated before the bell rings

School slang for the practice of being in one's seat before the start-of-class bell rings. Often used in the context of school rules or student discipline.

See also: 着席

• この学がっ校こうではベル着ちゃくが徹てっ底ていされている。

  At this school, being seated before the bell is strictly enforced.