academic background laundering; attending a highly-ranked graduate school to boost one's credentials
Colloquial term, often used critically to describe someone who attends a prestigious graduate school mainly to improve their résumé or social standing, rather than for genuine academic interest.
He is said to have entered a famous graduate school for academic background laundering.
The term 'academic background laundering' is a sarcastic expression about credential-oriented society.
Compound of 学歴 (academic background) and ロンダリング (laundering, from English 'laundering' as in money laundering). The term is a modern colloquial coinage, likely from the late 20th or early 21st century, reflecting social criticism of credentialism.