You know with love potions, memory charms and what not in the wizarding world the abuse of potions, spells by students in Hogwarts would probably be huge. It's a large castle with a lot of abandoned classrooms and secrets it's literally open for abuse it for students to have sex, rape, curse, confund each other. Course teachers are there but they can hardly keep up with every student. I'm going go of the assumption that through sheltered Harry's eyes we probably didn't see all the shit that didn't go on there. Especially with death eaters taking over 7th year the Slytherin students would have abused the power they had openly. There is probably more promiscuity, cursing, potions abuse than we saw through HP. He is very naive, sheltered and doesn't seem to observe much. Hell Hermione had to point out to him who Nott was. Perhaps Ginny was more promiscuous than he knew about. Maybe Hermione and Viktor? I wonder. Imagine the shit the marauders got up to in their time.

 

Well, given that none of that is shown or implied for the most part, it’s up to you if you want to believe it or not.

I’d say it’s just as easy to handwave a good bit of that as being prevented by some random magic of Hogwarts, similar to the dorm alarm/slide staircases.

Since the original canon is a children’s story, that’s what I choose to believe on the subject.

 

Well Romilda Vane certainly tries to daterape Harry in HBP, so I'm sure that it happens. I would guess using an unforgivable curse on the grounds sends some sort of alert to the aurors, but obviously that does nothing to stop students from using memory charms. I'd also imagine that while most dorms and changing rooms are warded against members of the opposite sex entering while disillusioned or under an invisibility cloak, students definitely try.

Harry definitely isn't sheltered in the books though, we're just spared most of the grisly details.

 

Yeah 15 year old Romilda trying to date rape 16 year old Harry really freaked me out.