Experts agree that honor codes are not working like they used to. How they should be reformed—and whether it’s worth reforming them—is up for debate. The already-small number of colleges with full-fledged, student-enforced honor codes is dwindling. After a three-year pilot of proctored exams, Stanford University student, faculty and administrative leaders decided in April that the university will allow proctoring for all in-person tests starting…