退学になった

was expelled from school

→ 退学
phrase Rare #39,227
was expelled from school Usually means being forced to leave school, rather than choosing to withdraw.
JA: 彼は校則を破って退学になった。
EN: He was expelled from school for breaking the school rules.

トムはテストでカンニングが見つかって退学になった。

Tom was expelled from school after he was caught cheating on a test.

私は学校を退学になった。

I was expelled from school.

私は高校を退学になった。

I was expelled from high school.

トムは校則を破って退学になった。

Tom was expelled for breaking the school rules.