So, here’s the thing... I might be slightly off-topic here, but whatever. I’m 20, and my younger brother just got home from school two weeks ago; he’s in 8th grade, and they were sitting there in biology class discussing male and female reproductive organs, pregnancy, and all that standard curriculum stuff. When the conversation drifted toward how a woman gets pregnant through intercourse involving sperm, the teacher asked if anyone had anything to contribute. Well, one of his friends actually asked if a woman could get pregnant if someone were to, say, "dump" sperm into a swimming pool and it somehow made its way into her. Instead of just answering the question, the teacher basically told him how "stupid" he was for even asking something so ridiculous. She did clarify that it wasn't possible, sure, but she used this condescending tone—not that she called him a moron outright, but you knew where she stood.
...Honestly, I feel like some teachers really need to develop a bit more empathy when dealing with middle schoolers on topics like this, because, at the end of the day, it was a valid question, wasn't it? Especially since kids that age are usually too embarrassed to even bring these things up!