dodorex

  The most likely culprit, it emerged, was that the "collective" and "petty" forms of corruption, as witnessed by Dr Borcan herself, had a curious effect: they might be paid for chiefly by well-off students bribing invigilators, but everyone benefited. It gave the poorer students "a free ride" to higher marks.

  It also meant that when cheating was removed, the academic advantages of wealthier students became even more apparent. Cheating it seemed had provided a kind of levelling effect.