I wish someone could wash my brain. It's pretty full of defilements, it could do with a good brain washing.
But seriously, those students definitely sound as if they were duped, brainwashed, or convinced by a pretty bad monk. That monk has plain old wrong view, plus an unfortunate power over young people. I hope they can get back to their studies.
It would be interesting to know who the monk was, and with what school/temple he is based.
saturated with joy,
you will put an end to suffering and stress.