Forgive me if this has been discussed elsewhere. Here are two references: http://www.nytimes.com/2010/02/07/fashion/07campus.html?pagewanted=1&hpw http://www.nytimes.com/2006/03/23/opinion/23britz.html?_r=1

The TLDR version is that female college applicants are generally better on paper than guys, as a whole. This means that selective colleges can either admit without paying attention to gender (thus creating a gender-imbalanced student body), or discriminate against women in order to create a more balanced student body.

The reasons for the imbalance are another rabbit hole entirely; I'm mostly interested in how much you think a balanced student population is important in making a strong campus community that is attractive to future applicants.