Been tried throughout history. It almost never works and is as horrific as it sounds humanitarian wise.
https://en.wikipedia.org/wiki/Canadian_Indian_residential_sc...
Also, it doesn't help that most of our kids seem to be raised by people who are either uneducated and poor (and thus don't pass on to girls the idea that they can get an education too and be good at math), or by people who are conservative and/or religious (and who actively discourage girls from doing well in math and science because of their traditional sexist values). The people who do have liberal values about this stuff aren't having kids (or not very many), so we just have this almost religious belief that our liberal values will somehow pass to these kids through societal conditioning (which they do to a certain extent thanks to the media and internet).
From what I've gathered from being around different women and talking to them, I think all this talk about being "disadvantaged" is missing the real root causes. They actually are disadvantaged, but the problem isn't the workforce, fellow college students, etc., nearly as much as it is their own upbringing, and their very own parents.
If you really want to fix the problem with women in tech, you need to take all female children away from their parents and raise them in state-run facilities where they're taught that they actually can do math and play with toys that aren't dolls and pursue careers in these fields. Somehow, I doubt this suggestion will be seriously considered....
In short, our very own culture is to blame here. That's not something that's easy to change, because now you're advocating having the state usurp the power of the parents to parent their children.