$1bn 'don't have sex' campaign a flop as research shows teenagers ignore lessons | World news | The Guardian

After 1 billion dollars, "A survey of more than 2,000 teenagers carried out by a research company on behalf of Congress found that the half of the sample given abstinence-only education displayed exactly the same predilection for sex as those who had received conventional sex education in which contraception was discussed."

Heh.