I have always felt that sex education is Schools somehow misses the point in that it fails to recognise the 'heat of the moment' aspect of sexual encounters, when common sense and reason disappear. The best advice I ever had came from a slightly older member of my peer group who said 'never mix sex and alcohol' an early version of 'Don't Drink and **'. Our other shared wisdom was to wear our old navy blue school knickers over our scanties. The prospect of the embarassment of having the knickers revealed, over rode the temptation to go a bit further. Once a relationship was established, you could decide, calmly & soberly, in advance, whether to leave this 'chastity belt' on or off before a date. Very successful strategy among our 'set'.
As to abortion, until I was 40ish I had a fixed stance, basically - supporting a women's right to choose, while personally convinced that I would not do it myself, mainly because my DM had me after rejecting the offer of a termination because this was her 3rd pregnancy in 2 years. When I was 40ish, a friend confessed to taking the morning after pill following a burst condom incident. I had a total rethink. Doctor had stopped my prescription for 'the pill' (deemed to be too dangerous to continue after 20 years), DH's business was struggling, I had built up to a decent salary, we had two DDs embarking on degree courses to support + the increased risk to the baby from having older parents. I decided that if the 'worst' should happen it would be morning after pill if possible or early abortion if necessary, with no agonising and no one else told - my body, my decision.