Unwanted Sealed Butterfly, many students are not so lucky as to receive comprehensive Sex Ed classes in High School. Many do not receive them at all, beyond: "Tab A goes in Slot B after marriage". At a religious girls' school, that was all the information I received back in the day, along with the obligatory condom warning. No information was given about being comfortable with our own bodies and they way they work in terms of pleasure, little information was given about alternative birth control and STD control methods, and certainly no information was given about safer same-sex relationships.
This is all the information I was never given and had to find out for myself from dodgy sources over time. I want young people to have a reliable, consistent source or set of sources that they can access at any time.
As to why you'd want to know this before you 'get a boyfriend', it is vital to learn about and become comfortable with your own sexuality and sexual functions before engaging in activity with others (besides, what's to say you won't meet someone in high school?). Knowledge is power; knowledge helps to prevent ignorance, accidents, and disappointment.
I hope I have answered your questions.
All the best,
Fizzlesticks