Fewer than 40% of American high schoolers have ever had sexual intercourse, a decline of over 15 percentage points since the early 1990s. The historic drop is one of the findings in the 2019 iteration of the Youth Risk Behavior Survey (YRBS), a biannual survey administered by the CDC that tracks risky behaviors, including sexual intercourse, among America's high schoolers. Administered to high school students across the country since 1991, the YRBS offers one of the more detailed longitudina...
