Yes and no. Teens/young adults will have sex whether you accepts it or not. However, how they do it and how they feel about it definitely depends on education.
1. Sex safety ed needs to be taught, otherwise you get STDs and pregnancies. A couple of hour lecture in school is not enough. Safe sex practices is something that has to be reinforced and encouraged.
2. Respect of consent (and situations where consent cannot happen no matter what either party says) and understanding how to properly express yourself to the opposite sex is extremely important. Our society is full of people who do not treat the opposite gender fairly and do not understand the importance of enthusiastic consent in intimacy.
3. Normalizing sex positive attitude. Many people feel shame from sex/shame others for sexual behavior/repress their own natural desires/etc, this needs to be counterbalanced, especially in a puritanically perverted society like the US.