Do you think school sex education classes need to focus more on sexual orientation?

When I was an active member on Yahoo! Answers, I would notice so many teens in the LGBT category very confused, stressed and obsessed with knowing and understanding their sexuality. Truth be told they were just too young to really know what their sexuality is. Your sexual orientation needs to develop naturally, it may take you up to the age of 18 to fully know what you are. And then there is the whole case of not yet reaching puberty.

The point is these teens are just not aware of any of this, clearly since many of them who I encounter expect a quick answer to something that they have to find out for themselves through life experience.

Should schools not be taking the steps to allowing growing up for these teens to be less confusing than it already is? Or have things changed in recent years?