I wonder how many unplanned pregnancies of minors occurred before the advent of "the pill" and Planned Parenthood? The word "few" comes to mind but, then, people respected their parents, parents instructed their kids about the birds and the bees, (because schools were only obligated to educate them; not sexualize and encourage lying to parents and, passing out condoms, telling them, "Go ahead, it's fun!") the Bible was still used for instruction in public schools and, things like Columbine didn't happen and, drugs, and guns on a school campus were virtually nonexistent.

Remove moral instruction and, teach kids that they are just animals with better brains than those in the wild and, well, they begin to act like those wild animals because, it doesn't matter any more what they do.