WHY WAS THERE A SUDDEN INTEREST IN SEX EDUCATION FOLLOWING WW2?

TOPIC: WHY WAS THERE A SUDDEN INTEREST IN SEX EDUCATION FOLLOWING WW2? HOW HAS SEX EDUCATION EVOLVED SINCE WORLD WAR 2? HAS SEX EDUCATION EVOLVED WITH THE TIME AND BEING ACCURATELY PRESENTED IN CLASSROOMS TODAY AROUND THE WORLD? WHAT WAS THE SCIENCE OF REPRODUCTION AND SEXUALITY IN THE 1800S? HOW AND WHERE DID PEOPLE LEARN ABOUT REPRODUCTION/SEXUALITY BEFORE WORLD WAR 2?