…it is a complicate social problem. Not only for teenager pupil and young adult. If you search news there are terribles ones: Not just one case, Teacher made sexual abuse and adult on dozens of girl in junior high school. Yet students can't say to their parents,cause teacher have power to decide their scores... The criminal admited they don't have happy sex life at home, so they change their targe to innocent girls. Those old men did have matters but doing this can cause a series of bad consequence.
When the victim grew up they certainly have shadows, not difficult to imply: fear if not, extream thinking of sex life in their lifetime.Some of them will becomes main character in the novel I read.May be they can find good guys. But what behind these? What cause normal people with a respected social position turns so ugly? I learned this a worldwide problem, but female in western are rather independent and more familiar (educated )with knowledge of sex, can protect themselves better.
In China grew ups are generally openly shy or even annoyed to discuss sex. Let alone encourage and make good educate of teens. Teachers have absolute authority at school, someone with evil mind feel they can "teach" those young student. During same time those girl can't or don't know how to repulse...
I don't think this is a common problem, but such few case can cause great shockwave in society.
Students lost faith in their teacher and parent, they get sexual education from own ways: porn websites (even a 13 years old can see it, regardless the warning), adult movies, some guys from society(often not good), and young pupil just as silly or innocent as them.
School should tell them how to have positive esteem about their sex ability, such education is necessary for adults too. If they learned in right way they may get a pleasant sexual life, rather than commit atrocities on teens with no sex experience. I talked this topic with my gf early, she is more conservative but think this kind of sick should be solve.
These are only my opinion, We don't have a solid grading system, but a censorship controlled by government. My films and ideas are certainly to be banned... But I don't mind, I will make them and distribute through website, although not sure whether it would success or not.