Typical adolescents begin engaging in sexual intercourse by 16 or 17 years of age, but approximately 20% of students have had sexual intercourse by 15 years of age. During the senior year of high school, 65% of students report having engaged in sexual intercourse.
These adolescent sexual behaviors include a range of activities from kissing and fondling, to oral, anal, and vaginal sex. The most recent Youth Risk Behavior Survey of US high school students reports: • 41% had sexual intercourse. • 30% had sexual intercourse during the previous 3 months, and, of these •
