Most local or county health departments offer free exams and testing and you don't need your parents' permission. Sexually active teen girls should have a gynecological exam once a year. It should be, but it's not always. That's why teens should request the test. It's the most common and costly of bacterial STDs.
Denial is probably a big factor in most teens' decision to have unprotected sex.
They think it can't happen to them. Also, teens today seem to feel more pressured to have sex and they don't always think about the long-term effects. Both can provide information on specific diseases, along with local agencies that can help.