You ask about marriage, yes, actually I want that every woman in the Society should be married. But what is this training to become wives and mothers? No school is required for that, simply association. And it is not necessary to say that women only can instruct the girls and men only can instruct the boys, not when they are so young. At 12 years, they may be initiated.
A woman's real business is to look after household affairs, keep everything neat and clean, and if there is sufficient milk supply available, she should always be engaged in churning butter, making yogurt, curd, so many nice varieties, simply from milk. The woman should be cleaning, sewing, like that. So if you simply practice these things yourselves and show examples, they will learn automatically, one doesn't have to give formal instruction in these matters.
From Srila Prabhupada's letter to Chaya — Calcutta 16 February, 1972