単たん位いを落おとす

expression, godan verb (-su)

fail to earn a credit; fail a course

Used in academic contexts when a student does not receive credit for a course, typically due to poor performance or insufficient attendance. The second English gloss 'fail to make the grade' is a more general equivalent.

• 必ひっ修しゅう科か目もくの単たん位いを落おとすと、卒そつ業ぎょうが危あぶなくなる。

  If you fail a required course, graduation becomes at risk.

• 彼かれは数すう学がくの単たん位いを落おとしてしまった。

  He ended up failing his math course.