選せん択たく教きょう科か

noun

elective subject; elective class

Refers to a subject or class that students can choose to take, as opposed to a required subject (必修教科). Common in school contexts.

• 高こう校こうでは選せん択たく教きょう科かとして美び術じゅつを選えらんだ。

  In high school, I chose art as an elective subject.

• 選せん択たく教きょう科かの数かずは