Yeah, no... it probably wouldn't have helped; very much so for the reasons I have stated in reply to Tambourine.

That said, I should add that 2 of those students ended up running into me again years later. They apologized, which was nice; but then offered me the chance to go do lines of coke with them...

I declined, and went on with my life knowing doubly that my instinct about them was correct the whole time. Wastes of skin.