Stanford University will require proctors at all in-person exams starting this fall, ending a century-old tradition of student self-policing as AI sharpens cheating concerns.

The University historically drew on the Honor Code, written by students in 1921, to maintain academic integrity.

The change reverses an honor-code policy dating back to 1893.

Princeton University will begin requiring all in-person exams to be proctored starting July 1 in the most significant change to the school’s honor system since it was established more than 130 years ...