British Schools Must Teach Everything

Apparently a third of British citizens are a bit confused about how a woman gets pregnant. I suppose that (along with an appalling 20% abortion rate) explains why England's birth rate is so low. What gets me is that they blame this ignorance on not being taught enough about sex in school:

Most blamed their ignorance on a lack of sex education at school, with 18 per cent of the 18 to 65-year-olds questioned saying they never had any such lessons.

"None of us is born with the facts about sex and reproduction - we are taught them," Weyman added. "If this doesn't happen, myths start getting into circulation and people end up not being able to tell fact from fiction."

Have we finally sunk to the point where we believe learning only takes place in schools? And as long as I'm asking questions, how on earth did previous generations reproduce without schools teaching them to do so?