make this a teachable moment
A person’s character is built at home. If you’re an adult in secondary school and can’t figure out not to cheat, better hope you get a warning and understand THAT’s the only teachable moment you’re going to get.
The prof has neither the time or opportunity to fill in where your up-bringing was incomplete . Uni is the first place we learn that the universe doesn’t have a lot of patience for the laggards.