Even in one building, snakes in general aren't great classroom pets. Especially a species as solitary as a BP. We often advise people to house their BPs in low traffic areas of the house, so a busy classroom is essentially the opposite of that. Traffic = stress, especially for species as secretive as a BP.
Is the snake handled?
Are you trying to feed during the day in front of a classroom of kids?
How much experience do you have keeping snakes?