Percentage of girls reporting intercourse by graduation
Percentage of boys reporting intercourse by graduation
12
90%
71%
13
53%
100%
14
49%
72%
15
37%
48%
16
18%
16%
17
13%
21%
The Younger the Dating, The Sooner The Sexual Activity From the Journal of Adolescent Research 1986; 1(3): 361-371 Authors: Brent C. Miller, J. Kelly McCoy and Terrance D. Olson
"Early dating, especially early steady dating, was related to permissive attitudes and to premarital sexual experience among both male and female."
Of ninth graders in steady dating relationships, 70% of boys and 60% of girls say they've had sex.