Sex education

From the Washington Post, reporting on a study of sex education:

Only about a third of sixth- and seventh-graders who completed an abstinence-focused program started having sex within the next two years, researchers found. Nearly half of the students who attended other classes, including ones that combined information about abstinence and contraception, became sexually active.
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The study is the first to evaluate an abstinence program using a carefully designed approach comparing it with several alternative strategies and following subjects for an extended period of time, considered the kind of study that produces the highest level of scientific evidence.