Another academic year is underway, and schools in England can again choose whether or not to teach sex and relationships education (SRE). The evidence in favour of making SRE a requirement in all schools is stacked higher than ever. One girl in four starts her period before she has learned about it, and 38% of boys do not learn anything about wet dreams before they experience them ( Sex Education Forum (SEF) 2016a ), which shows that even biological aspects of SRE are falling short.