Classes at UCD varies from 15-300 people, which may seem like it will be hard to get to know your professors, but definitely not. They have what is called "Office Hours," which is a time outside of class that students can go to if they have any questions. The more you go, the more you will get to know your professors. I really like some of mine, because they are very helpful and enthusiastic about the subject they are teaching. Some will tell you stories about their life, which is very interesting to hear. Your relationship with your professors really depends on how much effort you put into it. For example, one of my smaller classes, we went to have lunch with our professor. Everyone had a great time (and no, it was not mandatory to go).
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