Disciplinary (adjective)

1. Relating to the imposition of discipline.
2. Relating to a particular field of study or branch of knowledge.

Origin:

Origin: early 17th century: from discipline + -ary.

Examples:

1. The school's disciplinary policies were strictly enforced.
2. The team's coach had to take disciplinary action after the player's inappropriate behavior.
3. The professor taught a disciplinary course on linguistics.