Re: To increase diversity...
STEM has over-representation by women in certain fields (Biology for example).
It has nada to do with complexity, rigour or toughness. Women simply seem to be more interested in some avenues of science than men (if you're ever asserting that being a doctor is easier than being a computer tech, I'll openly laugh; I've worked with many docs in healthcare over the years, and they do as many on call hours as I do, with just as crappy anti-social working hours and with far more immediate stresses; women are very over-represented in the med field these days).
It all comes down to personal choice (and the factors leading to this are extremely complex). Every study so far that's been done on "it must be this" by the politically partisan groups have been shown to be incorrect.
Basically, if you want more women in computing, tell them they're not allowed to be doctors or biologists; that tends to be where the more technically minded women find their interests fulfilled.