Coby’s latest spark—that students (or their parents) who rated their teachers online could provide useful feedback—is intriguing. He’s right that such k-12 rating websites exist (see here) but haven’t reached a critical mass of users. Even if they did, though, the whole idea has a major drawback: This.

What is fair criticism and what is insult? What is fair moderating and what is censorship? Do we really want to inject more of this legal mish-mash into the school day?