I noticed that one of my worthy colleagues posted a NY Times article that discusses the lack of female contributors to Wikipedia in a sidebar. While I cannot address this directly, I can say that my friend and colleague at Georgetown University, Rochelle Davis uses the update of Wikipedia as a tool in her teaching. She has used it in a wide variety of courses, particularly with the students in the Master of Arts in Arab Studies. When I attended Georgetown, the MAAS students were at least 50/50 male/female, if not majority female; however, with the growing interest in the Middle East, there may also be demographic change in interests.
See https://commons.georgetown.edu/teaching/examples/wikipedia-project/ .