"This year, Dartmouth College made history by being the first national research university to award more undergraduate degrees in engineering to women than men.
The class of 2016 at Dartmouth’s Thayer School of Engineering was 54% female, according to their website." …
Great job! They may be the first “national research university” but they are not the first college. Harvey Mudd had 56% women engineers in 2014.
https://www.hmc.edu/about-hmc/2014/05/20/harvey-mudd-graduates-landmark-class/
Though I have no idea who may (or may not) have done it before them.