Union teachers are only required to indoctrinate students into the marxist belief system and produce obediant little idiots. (A job they have been performing quite adequately based on the college students I see at OWS.)
The intimidation process is performed by goons who have received special training in the proper use of baseball bats and lead pipes. (Although the pipes should be an alloy of steel and lead to avoid trouble with the EPA).
The teacher should immediately contact her Business Agent and file a grievance for being forced to perform tasks not appropriate for her job title.