A breach of trust of a different sort has taken place at Saint Mary’s College in Indiana. And the damage it’s caused at the all-women Catholic school, located next door to the University of Notre Dame, is so serious and irreparable that the consequences ought to be just as severe: President Katie Conboy should resign, along with the entire board of trustees.

In November, it came to light that Conboy and the trustees last summer had quietly agreed to open undergraduate admissions to applicants “whose sex is female or who consistently live and identify as women” beginning next fall. ...

To be sure, it’s no easy job to run a college these days. But the mission of Catholic institutions like Saint Mary’s is really rather simple — and ought to be crystal clear to those in charge. It’s to seek, teach, promote, treasure and defend the truth.