In the Lower Vth - the year before O levels, we had a series of talks from the local marriage guidance council, now Relate. This was an all girls school in 1971. The talks covered sex, contraception, std's abortion and anything else we wanted to ask.
It was very awkward - we were an extra form, created from the science divisions and the last 8 in the alphabet from 3 forms and had only ever had science lessons together before. So, when the lady asked the question "would you like to know about a,b,c,d or e?" some brave soul just said "Yes" so she told us about everything on her list.
With the permission of the family concerned, she told us the story of a girl in the year above who found she was pregnant. She and her boyfriend ran off to London and her little brother then aged 3 was saying he was going to sit in the middle of the road and hoped a lorry would come along and kill him, he missed his big sister so much. She told us that, should any of us find out we were pregnant, nothing would be as bad for our families as the distress of that toddler, and urged us - if in the same position - to contact them for help - perhaps for abortion, perhaps other alternatives, but not to run off to London without trace.
Back at a reunion, some 20 years after leaving, one friend who was a school governor said that they were trying to get something like that at their school but it was an uphill struggle against the parents. She said that she hadn't realised that our school was so advanced.