Some noble men AND women were extremely well educated, if that was their desire (you didn't have to if you didn't want to -- the uneducated Upper Class Twit goes all the way back to the Norman Conquest). Many middle class/townsfolk/ smallholders were also very well educated, as they saw it as a passport to success, and they did tend to educate their daughters as well.
Nobody else was, too busy trying to scratch a living.
No sale.