Students Evaluating Teachers

Research on role reversal? No, just an apparently-practical way to evaluate teachers. Why Kids Should Grade Teachers

The responses did indeed help predict which classes would have the most test-score improvement at the end of the year. In math, for example, the teachers rated most highly by students delivered the equivalent of about six more months of learning than teachers with the lowest ratings. (By comparison, teachers who get a master’s degree—one of the few ways to earn a pay raise in most schools —delivered about one more month of learning per year than teachers without one.)

"Rated most highly" doesn't mean "most likable"; they're asking which teachers have control of the classroom, which teachers teach. It seems to work.
Interesting.