Northwestern's policy makes it technically breach of contract if faculty members discover an incident of academic misconduct and try to handle it themselves rather than refer it immediately to the Dean's office. I like this idea so much more than Wisconsin's policy, which required you first to meet one-on-one with the student and only pass it forward if you intended to implement any punishment. An interesting twist is that if a lecturer or junior faculty member at Northwestern and tried to handle it The Wisconsin Way, the student could turn around and try to blackmail the teacher for their misconduct-misconduct.
First incident of undergraduate plagiarism that I had at Wisconsin involved a class where the TA caught the student. I don't remember if this was the case where the undergrad's reference to their "35 years of experience in the field" was the giveaway that perhaps the student had not written the text in question, or the one whose paper included "(see map on page 537)." Anyway, the TA was convinced this was an anomalous experience. "Good student; sociology major" he said, more than once.* I had to meet with her and she had a story for how some emergency had happened and she was scared about turning in the assignment late and so took something quick off the Internet. I believed her. After all, she looked really remoseful and scared. But there was another assignment out and ten seconds of Googling revealed that one to be plagiarized as well. Turns out, she had even been lying about being a sociology major.**
* No, I didn't really understand why the idea of her being a sociology major was supposed to make her less like to commit misconduct, either.
** All that evidence that people in positions of authority aren't any better at detecting when people are lying, but they do believe that they are: you don't believe it applies to you until confronted with the fact that it does.