Should sex education be taught in school?

Once again: this topic is not about whether people should be informed at all, rather where it takes place.

I actually find it incredulous that someone doesn't know of the existence of HIV in this day and age, despite flipping the news on or reading a newspaper (which are also ways to 'accept good information'; my point in this tread is: why does it necessarily have to be a teacher?). I mean no disrespect to this person you've mentioned, I mean I literally have a hard time believing this is a legitimate story (depending on the country or continent this person hails from). Also it moreso speaks *against* this/these person's parents, rather than *for* sex ed.

In this thread, I've mentioned the following arguments to support my opinion [with some additions I hadn't mentioned so far between these square brackets]:
   - Youngsters should be encouraged to weigh in on this decision, as the subject of which they are informed with is of a more personal nature, and if they would prefer to keep that personal, I actually respect that;
   - I think pre-adolescents, despite their young age, are very capable to voice their interests and should rather be encouraged to think for themselves than anything else [especially in school];
- [Despite a long tradition of child psychology debating this topic] I am under the impression that you "can't"/shouldn't decide for heaps of youngsters when is the "right" time for them to be educated in this en masse;
   - The decision to have sex "educated" in school might add to the existing over-reliance on school that folks have for child upbringing already;
   - I'm unsure whether throwing percentages at emotionally struggling teens will solve the problem, as it actually might make them more [mentally] insecure about how they relate to what is perceived to be [statistically] 'normal';
   - I don't see a significant difference between the addition of sex-ed compared to a possible expansion of the reproduction-chapter in biology class;
   - I don't think people would be physically unable to figure a condom out without collectively having done so before the age of 14, under supervision of a trained adult;
   - Rather than being "too immature to accept good information from a teacher", some youngsters might feel resentment for what they could perceive as patronizing, especially if their feed-back (such as the one Unicorn made at the top of this thread) is not taken seriously [because NO MEANS NO <- which is what they chiefly should be taught, where-ever];
   - Instead of adding to the existing over-reliance on schools for child upbringing, I would propose to encourage - and if possible assist - parents to take responsibility for their children. There are probably ample reasons for them to wanting to share this load (like working multiple jobs or health issues), and I would rather see these fundamental problems addressed than creating 'outsourced' symptomatic solutions [if I may dramatize for the sake of argument].

Finally, I appreciate the fact you think my (or anyone's) personal comfort level weighs less than what is beneficial to society as a whole, but I wouldn't learn anything useful from a sex-ed teacher with *that* attitude.