Anti-abortion campaigners, frustrated at the national level, are now targeting schools that offer sexual health services to pupils. Polly Curtis talks to those in the firing line. Headteachers aren't often accused of conspiring to murder, least of all when they are following government policy. But, increasingly, schools are finding themselves in the firing line of an organised campaign by anti-abortion activists aimed at derailing the government's plans to take sexual health services into schools.