I don't see why not. I mean, I don't know about other countries but here in the UK it's not like it could make any MORE people have sex below the age of consent than already do. Sure it will embarrass some people to talk about it in that much detail but overall I think it will be beneficial overall. It would certainly help a lot of people who would otherwise be nervous that they would have very little idea of what to do for their first time, and if people are more confident and more clued up it will be better for everyone involved. Although, as well as teaching a variety of different techniques it's also crucial that they learn that there are no hard and fast rules as to what works and what doesn't, and that they have to find out what's best for the person they're with at the time for themselves.
As nerdy to the extreme as this will sound I made sure I did my research before my first time (and by that I DON'T mean I watched porn, because a lot of the time that's not a very accurate source), and looking back I thank God I did. If I hadn't I think I would have disappointed myself just as much as the girl I was with at the time. But instead she refused to believe for several days afterwards that she was my first, because she thought that no-one could be that skilled on their first time (for the record I did try to word that sentence in a way that made it sound like I wasn't bragging too much, but anyway...)
So based on my own experience, the better educated about every aspect of sex (within what's legal anyway), the better sex will be for everyone.