We didn't have anyone that senile at my schile, but if we did -- the only question would be "how hard is the class". If he forgot assignments and gave A's, he'

We didn't have anyone that senile at my schile, but if we did -- the only question would be "how hard is the class". If he forgot assignments and gave A's, he'd be loved by the students. But I went to a really bad high school. I suspect at better schools students are probably better judges. But you end up with an odd situation where the schools that need the least help have the more accurate assessment (and frankly probably have the fewest poor teachers).