The stat that jumped out at me was that nearly 73% of the high school girls were NOT sexually active. I don’t know if I believe it’s that high, but if it is, it’s better than I thought.
think the math works out aporoximately so:
9th grade - 3% sexually active
10th grade - 9%
11th grade - 30%
12th grade -67%
should work out to 27%, cut those percentages in 1/2 to determine approx number of carpet munchers in each grade