Not all Islamic societies are against educating women. Another thing that sometimes happens in deeply patriarchal societies is that women are freer to engage in

Not all Islamic societies are against educating women. Another thing that sometimes happens in deeply patriarchal societies is that women are freer to engage in non-earning pursuits. So they study because they don't have to worry about supporting families but they wouldn't be allowed to work later on. It is also seen in India, e.g., where lots of women study but gender participation in the workforce has actually dropped in recent years because it isn't acceptable for them to work.