However, "As a Catholic educational institution that seeks to form Women of Faith and Integrity, we view racism as a mortal sin," is the more important story.

You can expand this beyond the Catholic Church and into the wider so-called right/conservativism. The default response to this is to disbelieve this story which carries with it the implication that if the girls did this violation of the doctrines of political correctness, that they've committed a grave sin. It is one of the ways that many so-called conservative institutions enforce political correctness while pretending to be against it.