In an world with honorable human beings raised in Wisdom, we would understand that cheating only hurts ourselves in the long run, but that is not our world majority's ethical zeitgeist at the moment.
The lack of ethics, like all selfishness, propagates inefficiencies into the greater society, as exemplified here for our overworked and underpaid teachers.
Our son has become quite a good chess player over the past 6ish years, during which online chess cheating via engines has proliferated. I explained to him that he is completely responsible for being able to honestly say, "No." in answer to the question, "Have you ever cheated in online (or over-the-board) chess?".
Having a decision matrix that leads to ethical action confers a specific peace that accompanies knowing that one has done nothing wrong. In a world full of liars and cheats, being honest is its own very special and quite rare power, looks to me.