I've just been away to make a pot of soup (potatoes, onions, broccoli, cheddar, milk, a bit of chicken stock, some butter, garlic, pepper, very very very good) and am slowly falling asleep, so can just about comment that even in the Elizabethan era it was uncommon for women to read... but even nowadays functional literacy seems rarer (in the population as a whole) than I'd expect.
And heeeere I go off on a tangent again (always a risk when very tired): many of my grad school classmates actually admitted they picked science to study post grad because they did not like to write. (a) Someone obviously forgot to mention the thesis defense requirement to them; (b) inability to write generally suggests an inability to follow complex trains of thought - or to generate them - which doesn't bode well for doing independent research. I remember telling my dad that I'd won a full scholarship to a PhD program in a vo-tech school. We were both stunned by the lack of genuine interest in science among my classmates - it was a meal ticket to most of them, nothing more.
That to me is a far more serious illiteracy... because it's disguised. And I am rambling, and dinner was delicious, and I'm going to tend my kitties and toddle off to bed.

G'night all.
_________________
"I believe you find life such a problem because you think there are the good people and the bad people," said the man. "You're wrong, of course. There are, always and only, the bad people, but some of them are on opposite sides."
-- Terry Pratchett, Guards! Guards!