no, I didn't learn all history chronologically - did anyone? In my day, I should say, WW2 was current events (recent past, anyway) rather than history, and so wasn't taught at all. (Also, I'm not British.) There is, quite literally, too much going on in the world for anyone to know more than the tiniest fraction of it. (I've been told a single copy of The Times will contain more words, and more information, than the average well-to-do man in the middle ages would have encountered in his whole life.)
As far as I'm concerned, the important things are to know what you don't know, and know how to find out about it. bird_81 seems to be doing this. She didn't know where to start - unlike your daughter, she didn't have you to turn to - so she asked.
WW2 may be basic to me, because I'm old; but I'm not going to be horrified because other people, even teachers, don't know what I know. It's possible that they can do plenty of equally basic stuff - explaining the second law of thermodynamics or getting the right amount of air into their tyres - that's beyond me. That's why AB is here, to ask for help.
We grow up assuming that teachers, like parents (simultaneously, in your case), know everything; but they don't. They have to start somewhere like everyone else. The test for them, surely, is how well they pass on information once they've learnt it themselves?