Who's your form teacher?

你们年级的老师是谁？

《牛津词典》

Who is your form teacher?

你的级任老师是谁？

youdao

Teacher Fei had never cursed at a woman, either in words or in any other form of expression, and he certainly did not want to begin with a young girl.

范老师从来不辱骂妇女，无论是用言语或其它方式，他当然不会为这么一个小女孩破了例。

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In Newark, Mr. Christie helped usher in a form of teacher merit pay by shepherding contract talks between his hand-picked superintendent, Cami Anderson, and the Newark Teachers Union.

WSJ: Options Open on Camden

Two sixth form students and a teacher from the Isle of Man have returned from a two-week educational trip to Nasa in Houston, Texas.

BBC: Isle of Man students plan Nasa Mars mission

If anything, parents and administrators clamor for reduced productivity per teacher, in the form of smaller class sizes.

FORBES: Defining Performance In Disruptive Innovation