<p>I have a teacher that does the exact same thing, but with just a slight twist. She Acknowledges the usefullness and the didactic nature of having students evaluate presentations but also understands that if they are just left to that then they give eachother 100s and call it a day. </p>
<p>What she does then is that she deducts half the difference between the student evaluation and the teacher evaluation from the grade of the student that evaluated, that is if the evaluations differ by more than 5 points. Students are forced to follow the rubric and grade appropriately. </p>
<p>For example Student Adam is presenting, and Student Brian gives him an evaluation of 70, the teacher gives Adam an evaluation of 95. Brians grade on his presentation would go down by 25/2 points unless he can appropriately justify, using the rubric, why he gave that grade. </p>
<p>Usually students pick up on the rubric quickly and the grades only end up differing by very few points, meaning the evaluations are good. </p>
<p>You should suggest then to your teacher to incorporate this system, or at least highlight the flaws that the old system has, whilst explaining that your classmates evaluated you poorly out of a personal grudge.</p>