According to a team of scientists from University College London.
Who'd have thought it, eh?
Although the authors say the results should "temper high-expectations about the long-term impact of peer-led approaches", they also argue that "taken as a whole, the results support consideration of [peer-led sessions] as part of a much broader strategy to reduce teenage pregnancy."
OK, let's examine this on observation based evidence. Before we had sex education - trendy or otherwise - we had low teenage pregnancy rates, low incidents of STDs and few abortions. Since we introduced it they have all rocketed.
Am I missing something here?