I think there is a big assumption here that the people have gone to a Catholic institution because it was Catholic and they cared about Catholic instruction. At any given Catholic law school, there could be 50 or 60% of the students that are not Catholic or are inactive Catholic.
For example, The University of San Diego attracts non-Catholics because it is the most reputable law school in San Diego, not because it is Catholic. Georgetown is the best law school in DC, so people go there.
Now, as long as the law school has a captive audience, you’d think that they would at least put out there what Catholic moral teaching is on certain controversial points of law, and show people how to defend it. In that, these institutions have failed, big time.
“... you’d think that they would at least put out there what Catholic moral teaching is on certain controversial points of law, and show people how to defend it.”
That would require hiring profs who themselves understand Catholic moral teaching.