Best actual numbers I could find: 40% of the intro class (CS106A) were female, and up to 20% of the graduating class. (http://sheplusplus.stanford.edu/sheStatistics.pdf). I can't find the percentage of women among those who declare the CS major. From elsewhere, there are about 600 students in the intro course, 220 people declare the major, and 80 graduate. So 240 women in CS106A and 16 graduate. To argue that less than 80% of women drop out after declaring, we have to assume that 80 or fewer women declared a CS major, which means they made up approximately 1/3 of the declaring students, which sounds plausible to me.
The corresponding stats for male majors would be 140 declare the major and 64 graduate, so they lose 55% of declared students. Also pretty high, but the difference is large enough to be worth looking at.
disclaimer: these numbers are from the internet, definitely not dealing with the same cohort at each step, and may be quite wrong. If anyone has better ones, do share.
The corresponding stats for male majors would be 140 declare the major and 64 graduate, so they lose 55% of declared students. Also pretty high, but the difference is large enough to be worth looking at.
disclaimer: these numbers are from the internet, definitely not dealing with the same cohort at each step, and may be quite wrong. If anyone has better ones, do share.