Every octal course evaluations take place, which are meetings during the lunch break. You can give feedback on the courses you are following, and mention the things which you find good and bad about a course. Dirk will summarize this feedback, and present it to the teachers. This helps teachers to improve their course. Another great feature of course evaluations is that you will get free lunch, which is really nice.
The first years course evaluation will be held in Rotterdam, the exact location will follow soon.