As a former professor, there is some correlation between grade and evaluation, but there is a much higher correlation with workload. The less work in the course the higher the grade. I needed to maintain a teaching evaluation over 3.5 / 5, but I cared that my students actually learnt something so I would aim for a score of around 3.6 - 3.7 and then loaded up my students as much work as I could and achieve this.
The sad thing with teaching evaluation is they are collected while the student was doing the subject. I can't tell you how many of my students complained like crazy about the subject while doing (what you expect me to work), who a year later told me the subject was the best one they had taken in their whole degree because they had learnt so much.
The sad thing with teaching evaluation is they are collected while the student was doing the subject. I can't tell you how many of my students complained like crazy about the subject while doing (what you expect me to work), who a year later told me the subject was the best one they had taken in their whole degree because they had learnt so much.