"I'd bet money the teacher wasn't around. Then what?"
If the teacher wasn't around, then skip to point 2.
"I'd also bet money she did"
Good. Was that before or after she blamed them for wearing leggings and skinny jeans?
"She didn't, she gave them practical advice rather than froth that young German manhood are just rotters and really shouldn't be, something you have so far failed to do ( the advice, that is )"
Are we reading the same thread? Please point out where I have said anything like that.
Practical advice on what? How not to get your arse slapped? Well, I suppose I could always advise them to have a sex change 
"Not quite so simple, is it?"
Yes. It is.
"My response to armchair critics is always "well, why don't you do it next time". Shuts most of 'em up PDQ. "
People walking away from you and shaking their head does not mean you have "shut them up".
Why don't I do it next time? Err... what? Ok. I will. On the next residential trip I go on, should a sexual assault take place on a student, I will embark on the course of action I described above. If you would like photographic evidence of this, should such an incident occur, I am happy to provide it 