Crossword puzzle clue "teacher's before class work"

Teacher's before-class work

Opus ___ (Catholic teaching also called "the Work, work work work work")

Player of the bad teacher in "Bad Teacher"

Something your poetry teacher might assign you to write about a particularly inspirational poetry teacher you've had *hint* *hint

"See me ___ class" (note from a teacher)

Teacher's opening remark to the class.

Gym teacher's deg. (hey, it even has the class in its name)

Teacher who runs his class like a game show?