annie- that's not entirely true. I was a sec school teacher in the late 70s and many, many girls went to uni, as well as before that! We are talking just over 30 years ago- not 300 years. The overall increase in students is across both sexes. Diana was simply not academic.
All this talk about K having to somehow 'justify' her position is odd.
Thinking back, no one questioned the background in terms of 'success' of any royal spouse. The Duke of Ed. was in the Navy but he gave that up quite quickly. The wives of Andrew and Edward did have careers (Sophie more than Sarah) and had to give them up due to conflict of interest.
Kate has no obligation to do anything except produce an heir and spare. If Royals do charity work, all well and good, but they are not compelled to.
The problem with the Royal family is that whatever they do, some people will have a problem with it. If K worked, she'd be accused of using her royal connections. She's also be accused of neglecting her children (as the Queen was, for spending too much time away from them)
As far as I can see, K is trying to live a normal life as a SAHM with 2 children under 3 years old. She has every right to do this and if she wants to connect herself to charities, that's a bonus- not an obligation.
The spite and jealousy on this thread is shocking. I wonder how many of the people posting are high achievers and have done anything really special or worthwhile with their lives?