"When Notre Dame, BC or Georgetown...has a woman president...."

So long as there is a critical mass or pool of Jesuit candidates to fill the office of president at Jesuit colleges and universities, I don't think it likely that lay women or men will fill those positions -- or many of them -- any time soon. But when Jesuits don't have enough qualified Jesuit candidates (at their 28 colleges and universities) for the office of president, I am sure they will open the position up to lay people, both women and men. Likewise at the University of Notre Dame, founded by the Congregation of Holy Cross. When that Congregation doesn't have a suitable number of (or available) Holy Cross candidates for the presidency there (as spelled out in ND's by-laws), the board of trustees can open the position up to qualified lay people. Because women's religious communities or orders don't do as well in vocations, it is not surprising that lay people are filling the office of president at their schools.