Good question, Aeo.

I have different races in my world, and each race is different. With my Te Warriors, the children stay with their parents until they are about 8 years old, then they are trained by the higher level Te Warriors; they still see their parents, but a lot of their time is spent training away from them.
With my Lamig the children stay with their parents until they are 16, the women raise them, the fathers have little to do with teaching them at all during their younger years. At 16 they are taken away from home to be more with their fathers and trainers.
My Elvish culture is completely different. They are very close families. I haven't worked a lot on my Elves yet, but I am going to have them stay at home on a close home environment.
Basically I think that you can have what you like, make it fit in with the kind of culture you want.

In the Middle Ages there were few schools for girls, mostly boys received school education, the girls were taught at home.
Well, I hope some of this helped a little.
