So I believe girls do better who go to Rose Hullman, or RPI, very male dominated undergraduate environments. And School of Mines too. The girls I know at Colorado School of Mines are so used to dealing with men, they fit right into their work environments. and do better. Thats my experience, for what its worth. I don’t have an answer about gender balance, and CMU, but I know it is not helping the girls themselves that go to CMU.