I think if I knew about the web cam monitoring, and there was a hot teacher at the school...I would have to make a sign that said, "thinking of you Miss/Mrs.________, and then proceed to rub one out, and drop a load all over a picture of her face. Until that time, and after it, they would be looking at a picture of the biggest, nastiest dump, I could manage to drop.
As a former ISP customer service agent, I can say:
Well, we had people write us who begged if we could somehow erase videos and/or pictures of them in situations like the one you described (and far worse ^^ ) ... but in most cases, we could not, as data liek that spreads like swine flu around the web, and if you want to get any significant job, forget it.
The web never forgets. And teachers post shit about others, too.