Presumably, evaluations are anonymized to protect the students from possible retaliation by the instructor or institution.
Is there anything in the reverse direction (keeping that information hidden is beneficial to the instructor)?
What are potential consequences if a student chooses to place identifying information (e.g. knowledge of a particular conversation) onto an evaluation?
The exact situation is that one of my friends was considering discussing a very long conversation she'd had with the professor on the class evaluation, and how it exemplified issues she'd had with the class. She's taking a class with that professor next semester, which is a big issue for the student. That issue aside, I'm wondering if there would be good reaons to avoid this even if she would never take another class with this instructor.