University and college faculty in the United States undergo student evaluations on a regular basis. Indeed, they are evaluated 6–8 times every year, depending on the number of sections they teach.
Some researchers have questioned the efficacy of student evaluations, suggesting that students are not sufficiently competent to differentiate good teaching from bad, with others noting that the rise in student evaluations is positively correlated with grade inflation.
Here's the question: Can anyone seriously believe that a faculty member's teaching might change so rapidly that he or she must be evaluated half a dozen times year after year?