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

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.