To what extent is a rape victim responsible for the crime?

[Gilgamesh]

Also, in my school, the girls were taken out of class occasionally to be warned about rape and how to behave and dress to avoid it, we even had kick boxing lessons.

So? I don't want to strawman you, but if you are inferring that teaching women how to avoid rape scenarios - or how to get out of one, is the same as blaming them for the rape, then you're wrong.

Even when a girl at my school was raped in the toilets, the girls were again taken out of classes to be told not to flirt with boys during break time. Again, the boys were never given a talk on not raping.

Maybe she wasn't raped. Getting caught having sex in the school bathroom would never prompt the female who took part to claim rape. I'm assuming you didn't actually see what happened in that bathroom, though. Did you see it? If not, calling the guy a rapist is pretty crude.