It's always better to be more educated than less, unless you live in Oceania and "ignorance is wisdom".
I fully support sex education that explains to students the various issues of having sex.
For example:
1. Explain the various methods of contraception (e.g. condoms, diaphragms, pills, morning-after pills, coils, vasectomy). The success rates and impacts must be mentioned clearly.
2. Moral implications of sex. Sex involves more than the act of copulation, and the significance of a sexual relationship must be told.
3. What if the unthinkable happens. Students must be told how to fix the mess if conception happens. They should hear about opportunities for counselling, abortion, care, and other things regarding pregnancy.
Not giving the younger generation a good sex education is removing their ability to make intelligent decisions. Sure, they may fuck anyway, but at least if you explain to them what it entails, they may have second thoughts, or they may be able to do it in a safe way, or at least know what to do if they mess up.