我的修改是:
One student suggested that universities should open up online evaluation of professors so that everyone can use it, because it is good for both professors and students.
In this way, professors can be motivated to improve their teaching, and students can get information about the course they want.
People disagree with the proposal for two reasons.
First, professors will not be happy if their teaching styles are publicly criticized, and they may not even read these negative criticisms. Therefore, they will not be affected by the evaluation, nor will they change.
Secondly, students who do not want to spend too much time usually write comments on the last day of class and leave in a hurry. Therefore, evaluation will not help classroom or professors.