Well taught sex education does no such thing. Sex and responsibility classes must tread a fine line, first stressing the importance of waiting until ready before having sex, and pointing to the physical benefits of fewer partners and starting sex later – but must then move on to the reality of modern Britain’s sex-ridden teen culture, without applauding it, and try to decrease the very high levels of STDs and pregnancy. Yes, that’s hard to do – but that doesn’t mean we shouldn’t do it. On the contrary – it’s one of the most important duties society faces today. Arguments about poor teaching apply equally to maths. We often have to try to recruit teachers in unpopular fields – true, difficult, but hardly unique. The answer is to improve teacher training, both for new graduates and for practising teachers, and to bring in outside consultants from the health and social welfare sectors, who have deep experience in this area.