He was suspended from school for bad conduct.

他因品行不端而被停学。

《新英汉大辞典》

We condemned him for his bad conduct.

我们责备他行为不检点。

youdao

They condemned the employers for their bad conduct.

他们谴责雇主的不良行为。

youdao

They have the dual purpose of raising revenue and decreasing the targeted bad conduct.

FORBES: If Soda Tax Can Make It In NY It Can Make It Anywhere

In addition to 10 months imprisonment, she will receive a bad conduct discharge.

BBC: Kimberly Rivera

First, Facebook is big, and as the FTC-Google investigation illustrates, big increasingly triggers antitrust scrutiny even without any evidence of bad conduct.

FORBES: Facebook Doesn't Violate Antitrust Law When It Controls Its Users' Experience