teacher's pet

idiomatic

(idiomatic) A student who is perceived to be favored by the teacher.

Japanese Meaning

教師にひいきされる生徒 / 教師のお気に入りの生徒

Though she hated being labeled the teacher's pet, Maria kept helping classmates because she genuinely wanted to.

彼女は先生のお気に入りの生徒と呼ばれるのが嫌だったが、マリアは本当にそうしたかったのでクラスメートを手伝い続けた。

Sense（1）

(idiomatic) A student who is perceived to be favored by the teacher.

As an intelligent and conscientious student, he was often labelled as the teacher's pet in school.

teacher's pets

（ plural ）

teachers' pets

（ plural ）