Arrggh, I just found the stats for Columbia's incoming class of 2008 (both J-Term and Fall). Apparently only 32% of the class is women. That's a disaster. The link is below:
I've heard that J-Term is always disproportionately men (even in b-school terms) though. The weird thing is that I heard women were about 35% of the latest incoming class. I don't like how we're starting to trend towards MIT (close to 30%) instead of HBS (close to 38%) in that respect. Maybe that's another reason to apply to Stern. 42% !!