Ah, student evaluations. Here are some I had from students in the same class:
1. Has terrible chicken-scratchy writing (ironically this form was filled in in barely legible handwriting)
2. His presentation is very clear, especially his hand writing.
3. This guy's english is terrible.
4. Thank god we've got a native english speaker for a change.
5. obviously doesn't know any of the material.
6. clearly knows his stuff.
7, he just recited the textbook
8, he didn't pay any attention to the textbook
I imagine a fair summary of my teaching (2nd year multivarible calc in the states was the above examepl) is:
Seems to have no time for the textbook for the course, and doesn't set homework from it. Homework assigments are harder than I was expecting*. Doesn't suffer slow students gladly, and makes you spend time learning the material independently. Offers office hours whenever the student wants** and never turns a student away.
*[I actually checked what I could assume they knew and set questions accordingly - even my marker for the cours couldn't do some of them, depressingly]
** [students only attended them in the week before the test, so I got fed up with waiting in my office and made them appointment only]
I can imagine that any evaluations weren't anything like that.
I think most teachers know their own shortcomings (I have zero patience, for instance with people not prepared to think for themselves). I don't think students really appreciate what are shortcomings and what is them having unreasonable expectations. I even had one student demand I give him an A 'cos he got As in every other class. Tough.
Howabout a rejoinder website? Rateyourstudent.com, where teachers are allowed to post (suitably obsured) homework attempts and test answers offered by students?
Although I didn't set the exams for the courses I taught recently (in the UK), I did point out to all my students that if they simply did all the past exam papers on the subjects they will spot that the questions in alternate years are nearly identical (and on the homework sheets), and that there was no reason not to get almost 100%. I don't think more than a handful can have paid any attention to this advice.