I'll start taking all this gender equality stuff being reported seriously when I see at least half as many articles complaining about the latter as I see about the former. If one is a "problem", so is the other. Otherwise I'll take it there's an implicit assumption that women like to teach (or are better teachers) than men. And likewise men like STEM (or are better at STEM) than women.
Funny enough, there is a concern. MenTeach is about children's success. We want a diverse workforce, both men and women teachers, educating and caring for our children.
Of course, a problem is males are driven away from pre-school, elementary and middle school - it's not for lack of will, but there's an inherent distrust that a male teacher will rape all the female students that basically scare off the male teachers.
It's not for lack of interest or lack of skills, it's from an environment that basically does not allow men to teach.
And that's potentially the problem in IT - it's not the women are less skilled or less interested, it's that the men are somehow driving them away.
It's not a problem if it's simply "women don't want to be in IT" and the reason is "they're just not interested". That's something we can't change - you can't force girls to be interested in computers if they're not interested.
But if they ARE interested, and something else drives them away that we CAN control, then why don't we? Do we create a hostile atmosphere that makes women uncomfortable? Is there something that we don't do that they want us to do (e.g., shower daily)?
And that's what we really need to research. Perhaps 25% of women in STEM is fine, if 25% of them are interested in STEM fields and the 75% are in other areas, then that's perfect representation. It's a problem if say, 50% of women want to go into STEM and half of hose are somehow driven away from STEM, which means there's a problem we should fix.
Of course, this research is hard, and the answers will upset people - it may upset STEM workers because it can say stuff that they don't want to hear (e.g., "STEM workers are awfully misogynistic and should undergo gender sensitivity training as part of a regular ongoing training program"). Or it may upset women when it turns out they just aren't interested to begin with.