Sir: You report on an experiment to prevent teenage pregnancies by giving girls a raw egg to look after, thus alerting them to the burdens of parenthood. I find it extraordinary that only girls are mentioned ("Chicken eggs help girls learn about sex", 29 January). Surely, boys, being after all, 50 per cent of the equation, should be equally targeted? It appears that their responsibilities are not regarded as relevant at all. So much for equal opportunities.
Leighton Buzzard, Bedfordshire