担任する take [be in] charge of
- このクラスは私の担任です
- I am in charge of this class./This is my class.
- 彼は新任の先生を2年の担任にした
- He placed [put] the new teacher in charge of a second-year class.
- 担任学級the class in [under] one's charge
- 担任教師a class [homeroom] teacher; a teacher in charge;《英》 a form master [((女性)) mistress]