Leaving school before finishing (dropping out); quitting a school or course before graduation.
彼は大学を中退してベンチャー企業で働き始めた。
He dropped out of university and started working at a startup.
履歴書に『中退』と書く場合は、理由を聞かれることが多い。
If you write 'dropped out' on your CV, you are often asked for the reason.
病気のために高校を中退せざるを得なかった。
I had to drop out of high school because of illness.