裏口入学

うらぐちにゅうがく【裏口入学】

getting in [into a school] by the back door; backdoor admission.

～する get in [into a school] by the back door; 〔お金を払って〕 bribe [buy] one's way in [into 《a university》].

●裏口入学させる 〔学校が〕 let 《a student》 in [into a school] by the back door; 〔親が〕 get 《one's son》 in [into a school] by the back door.